Use C++03 friendly version of alignof

llvm-svn: 344215
Cr-Mirrored-From: sso://chromium.googlesource.com/_direct/external/github.com/llvm/llvm-project
Cr-Mirrored-Commit: 426ec260280fc4e2df56cebc564a829a34a90db1
diff --git a/src/fallback_malloc.cpp b/src/fallback_malloc.cpp
index 150a4bb..202a467 100644
--- a/src/fallback_malloc.cpp
+++ b/src/fallback_malloc.cpp
@@ -216,7 +216,7 @@
   if (size == 0)
     size = 1;
   void* dest;
-  if (::posix_memalign(&dest, alignof(__aligned_type), size) == 0)
+  if (::posix_memalign(&dest, __alignof(__aligned_type), size) == 0)
     return dest;
 #endif
   return fallback_malloc(size);