[libc++] NFC: Normalize `#endif //` comment indentation

GitOrigin-RevId: 4cd6ca102a94e1b64ba3f940cc26b4d7b2b82964
diff --git a/include/string b/include/string
index 336922e..d8d8106 100644
--- a/include/string
+++ b/include/string
@@ -675,7 +675,7 @@
 {
 };
 
-#endif  // _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT
+#endif // _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT
 
 #ifndef _LIBCPP_NO_HAS_CHAR8_T
 typedef basic_string<char8_t> u8string;
@@ -684,7 +684,7 @@
 #ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
 typedef basic_string<char16_t> u16string;
 typedef basic_string<char32_t> u32string;
-#endif  // _LIBCPP_HAS_NO_UNICODE_CHARS
+#endif // _LIBCPP_HAS_NO_UNICODE_CHARS
 
 template<class _CharT, class _Traits, class _Allocator>
 class
@@ -743,7 +743,7 @@
 #else  // _LIBCPP_BIG_ENDIAN
     static const size_type __short_mask = 0x80;
     static const size_type __long_mask  = ~(size_type(~0) >> 1);
-#endif  // _LIBCPP_BIG_ENDIAN
+#endif // _LIBCPP_BIG_ENDIAN
 
     enum {__min_cap = (sizeof(__long) - 1)/sizeof(value_type) > 2 ?
                       (sizeof(__long) - 1)/sizeof(value_type) : 2};
@@ -773,7 +773,7 @@
 #else  // _LIBCPP_BIG_ENDIAN
     static const size_type __short_mask = 0x01;
     static const size_type __long_mask  = 0x1ul;
-#endif  // _LIBCPP_BIG_ENDIAN
+#endif // _LIBCPP_BIG_ENDIAN
 
     enum {__min_cap = (sizeof(__long) - 1)/sizeof(value_type) > 2 ?
                       (sizeof(__long) - 1)/sizeof(value_type) : 2};
@@ -788,7 +788,7 @@
         value_type __data_[__min_cap];
     };
 
-#endif  // _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT
+#endif // _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT
 
     union __ulx{__long __lx; __short __lxx;};
 
@@ -839,7 +839,7 @@
 
     _LIBCPP_INLINE_VISIBILITY
     basic_string(basic_string&& __str, const allocator_type& __a);
-#endif  // _LIBCPP_CXX03_LANG
+#endif // _LIBCPP_CXX03_LANG
 
     template <class = _EnableIf<__is_allocator<_Allocator>::value, nullptr_t> >
     _LIBCPP_INLINE_VISIBILITY
@@ -897,7 +897,7 @@
     basic_string(initializer_list<_CharT> __il);
     _LIBCPP_INLINE_VISIBILITY
     basic_string(initializer_list<_CharT> __il, const _Allocator& __a);
-#endif  // _LIBCPP_CXX03_LANG
+#endif // _LIBCPP_CXX03_LANG
 
     inline ~basic_string();
 
@@ -946,7 +946,7 @@
     _LIBCPP_INLINE_VISIBILITY
     const_iterator end() const _NOEXCEPT
         {return const_iterator(__get_pointer() + size());}
-#endif  // _LIBCPP_DEBUG_LEVEL == 2
+#endif // _LIBCPP_DEBUG_LEVEL == 2
     _LIBCPP_INLINE_VISIBILITY
     reverse_iterator rbegin() _NOEXCEPT
         {return reverse_iterator(end());}
@@ -1017,7 +1017,7 @@
     _LIBCPP_INLINE_VISIBILITY basic_string& operator+=(value_type __c)            {push_back(__c); return *this;}
 #ifndef _LIBCPP_CXX03_LANG
     _LIBCPP_INLINE_VISIBILITY basic_string& operator+=(initializer_list<value_type> __il) {return append(__il);}
-#endif  // _LIBCPP_CXX03_LANG
+#endif // _LIBCPP_CXX03_LANG
 
     _LIBCPP_INLINE_VISIBILITY
     basic_string& append(const basic_string& __str);
@@ -1081,7 +1081,7 @@
 #ifndef _LIBCPP_CXX03_LANG
     _LIBCPP_INLINE_VISIBILITY
     basic_string& append(initializer_list<value_type> __il) {return append(__il.begin(), __il.size());}
-#endif  // _LIBCPP_CXX03_LANG
+#endif // _LIBCPP_CXX03_LANG
 
     void push_back(value_type __c);
     _LIBCPP_INLINE_VISIBILITY
@@ -1141,7 +1141,7 @@
 #ifndef _LIBCPP_CXX03_LANG
     _LIBCPP_INLINE_VISIBILITY
     basic_string& assign(initializer_list<value_type> __il) {return assign(__il.begin(), __il.size());}
-#endif  // _LIBCPP_CXX03_LANG
+#endif // _LIBCPP_CXX03_LANG
 
     _LIBCPP_INLINE_VISIBILITY
     basic_string& insert(size_type __pos1, const basic_string& __str);
@@ -1193,7 +1193,7 @@
     _LIBCPP_INLINE_VISIBILITY
     iterator insert(const_iterator __pos, initializer_list<value_type> __il)
                     {return insert(__pos, __il.begin(), __il.end());}
-#endif  // _LIBCPP_CXX03_LANG
+#endif // _LIBCPP_CXX03_LANG
 
     basic_string& erase(size_type __pos = 0, size_type __n = npos);
     _LIBCPP_INLINE_VISIBILITY
@@ -1254,7 +1254,7 @@
     _LIBCPP_INLINE_VISIBILITY
     basic_string& replace(const_iterator __i1, const_iterator __i2, initializer_list<value_type> __il)
         {return replace(__i1, __i2, __il.begin(), __il.end());}
-#endif  // _LIBCPP_CXX03_LANG
+#endif // _LIBCPP_CXX03_LANG
 
     size_type copy(value_type* __s, size_type __n, size_type __pos = 0) const;
     _LIBCPP_INLINE_VISIBILITY
@@ -1475,7 +1475,7 @@
     bool __addable(const const_iterator* __i, ptrdiff_t __n) const;
     bool __subscriptable(const const_iterator* __i, ptrdiff_t __n) const;
 
-#endif  // _LIBCPP_DEBUG_LEVEL == 2
+#endif // _LIBCPP_DEBUG_LEVEL == 2
 
 private:
     _LIBCPP_INLINE_VISIBILITY
@@ -1521,7 +1521,7 @@
         {return __r_.first().__s.__size_ >> 1;}
 #   endif
 
-#endif  // _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT
+#endif // _LIBCPP_ABI_ALTERNATE_STRING_LAYOUT
 
     _LIBCPP_INLINE_VISIBILITY
     void __set_long_size(size_type __s) _NOEXCEPT
@@ -1804,7 +1804,7 @@
         }
         __get_db()->unlock();
     }
-#endif  // _LIBCPP_DEBUG_LEVEL == 2
+#endif // _LIBCPP_DEBUG_LEVEL == 2
 }
 
 template <class _CharT, class _Traits, class _Allocator>
@@ -2008,7 +2008,7 @@
 #endif
 }
 
-#endif  // _LIBCPP_CXX03_LANG
+#endif // _LIBCPP_CXX03_LANG
 
 template <class _CharT, class _Traits, class _Allocator>
 void
@@ -2136,7 +2136,7 @@
 #ifndef _LIBCPP_NO_EXCEPTIONS
     try
     {
-#endif  // _LIBCPP_NO_EXCEPTIONS
+#endif // _LIBCPP_NO_EXCEPTIONS
     for (; __first != __last; ++__first)
         push_back(*__first);
 #ifndef _LIBCPP_NO_EXCEPTIONS
@@ -2147,7 +2147,7 @@
             __alloc_traits::deallocate(__alloc(), __get_long_pointer(), __get_long_cap());
         throw;
     }
-#endif  // _LIBCPP_NO_EXCEPTIONS
+#endif // _LIBCPP_NO_EXCEPTIONS
 }
 
 template <class _CharT, class _Traits, class _Allocator>
@@ -2232,7 +2232,7 @@
 #endif
 }
 
-#endif  // _LIBCPP_CXX03_LANG
+#endif // _LIBCPP_CXX03_LANG
 
 template <class _CharT, class _Traits, class _Allocator>
 basic_string<_CharT, _Traits, _Allocator>::~basic_string()
@@ -3360,7 +3360,7 @@
         #ifndef _LIBCPP_NO_EXCEPTIONS
             try
             {
-        #endif  // _LIBCPP_NO_EXCEPTIONS
+        #endif // _LIBCPP_NO_EXCEPTIONS
                 __new_data = __alloc_traits::allocate(__alloc(), __target_capacity+1);
         #ifndef _LIBCPP_NO_EXCEPTIONS
             }
@@ -3371,7 +3371,7 @@
         #else  // _LIBCPP_NO_EXCEPTIONS
             if (__new_data == nullptr)
                 return;
-        #endif  // _LIBCPP_NO_EXCEPTIONS
+        #endif // _LIBCPP_NO_EXCEPTIONS
         }
         __now_long = true;
         __was_long = __is_long();
@@ -4356,7 +4356,7 @@
     return _VSTD::move(__lhs);
 }
 
-#endif  // _LIBCPP_CXX03_LANG
+#endif // _LIBCPP_CXX03_LANG
 
 // swap
 
@@ -4462,7 +4462,7 @@
 getline(basic_istream<_CharT, _Traits>&& __is,
         basic_string<_CharT, _Traits, _Allocator>& __str);
 
-#endif  // _LIBCPP_CXX03_LANG
+#endif // _LIBCPP_CXX03_LANG
 
 #if _LIBCPP_STD_VER > 17
 template <class _CharT, class _Traits, class _Allocator, class _Up>
@@ -4520,7 +4520,7 @@
     return this->data() <= __p && __p < this->data() + this->size();
 }
 
-#endif  // _LIBCPP_DEBUG_LEVEL == 2
+#endif // _LIBCPP_DEBUG_LEVEL == 2
 
 #if _LIBCPP_STD_VER > 11
 // Literal suffixes for basic_string [basic.string.literals]
@@ -4567,4 +4567,4 @@
 
 _LIBCPP_POP_MACROS
 
-#endif  // _LIBCPP_STRING
+#endif // _LIBCPP_STRING