[libc++] Extend check for non-ASCII characters to src/, test/ and benchmarks/

Differential Revision: https://reviews.llvm.org/D132180

NOKEYCHECK=True
GitOrigin-RevId: 355e0ce3c5366bd0b564a25e4b6675353da3c53e
diff --git a/src/charconv.cpp b/src/charconv.cpp
index 05ee2cb..d01ecdd 100644
--- a/src/charconv.cpp
+++ b/src/charconv.cpp
@@ -21,13 +21,13 @@
 _LIBCPP_FUNC_VIS char*
 __u32toa(uint32_t value, char* buffer) noexcept
 {
-	return __base_10_u32(buffer, value);
+  return __base_10_u32(buffer, value);
 }
 
 _LIBCPP_FUNC_VIS char*
 __u64toa(uint64_t value, char* buffer) noexcept
 {
-	return __base_10_u64(buffer, value);
+  return __base_10_u64(buffer, value);
 }
 
 }  // namespace __itoa