[sanitizer] More renamed macros.


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@177401 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/asan/asan_internal.h b/lib/asan/asan_internal.h
index ab12831..dc8ad19 100644
--- a/lib/asan/asan_internal.h
+++ b/lib/asan/asan_internal.h
@@ -111,7 +111,7 @@
                                      u8 value);
 
 // Platfrom-specific options.
-#ifdef __APPLE__
+#if SANITIZER_MAC
 bool PlatformHasDifferentMemcpyAndMemmove();
 # define PLATFORM_HAS_DIFFERENT_MEMCPY_AND_MEMMOVE \
     (PlatformHasDifferentMemcpyAndMemmove())