[sanitizer] Replace more platform checks with SANITIZER_ constants.


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@177400 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/asan/asan_linux.cc b/lib/asan/asan_linux.cc
index 9b2ed17..b2df5a9 100644
--- a/lib/asan/asan_linux.cc
+++ b/lib/asan/asan_linux.cc
@@ -11,7 +11,9 @@
 //
 // Linux-specific details.
 //===----------------------------------------------------------------------===//
-#ifdef __linux__
+
+#include "sanitizer_common/sanitizer_platform.h"
+#if SANITIZER_LINUX
 
 #include "asan_interceptors.h"
 #include "asan_internal.h"