Yaron Keren:  Add missing comment.

llvm-svn: 192068
Cr-Mirrored-From: sso://chromium.googlesource.com/_direct/external/github.com/llvm/llvm-project
Cr-Mirrored-Commit: f66a81ad5671475b8df2af8e366d20327470d156
diff --git a/include/support/win32/limits_win32.h b/include/support/win32/limits_win32.h
index a1fad20..406cd30 100644
--- a/include/support/win32/limits_win32.h
+++ b/include/support/win32/limits_win32.h
@@ -72,7 +72,7 @@
 #define __builtin_nans(__dummy)  _Snan._Double
 #define __builtin_nansf(__dummy) _FSnan._Float
 #define __builtin_nansl(__dummy) _LSnan._Long_double
-#endif ! defined(__clang__)
+#endif // ! defined(__clang__)
 
 #endif // _LIBCPP_MSVCRT