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

GitOrigin-RevId: 4cd6ca102a94e1b64ba3f940cc26b4d7b2b82964
diff --git a/include/exception b/include/exception
index 37751d9..fd0cb22 100644
--- a/include/exception
+++ b/include/exception
@@ -277,7 +277,7 @@
     __do_throw(_Tp&& __t)
 #else
     __do_throw (_Tp& __t)
-#endif  // _LIBCPP_CXX03_LANG
+#endif // _LIBCPP_CXX03_LANG
     {
         throw _VSTD::forward<_Tp>(__t);
     }
@@ -330,4 +330,4 @@
 
 }  // std
 
-#endif  // _LIBCPP_EXCEPTION
+#endif // _LIBCPP_EXCEPTION