[asan] minor ifdef cleanup

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@149274 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/asan/asan_allocator.cc b/lib/asan/asan_allocator.cc
index 35d8352..3a8f9a7 100644
--- a/lib/asan/asan_allocator.cc
+++ b/lib/asan/asan_allocator.cc
@@ -35,6 +35,10 @@
 #include "asan_thread.h"
 #include "asan_thread_registry.h"
 
+#ifdef _WIN32
+#include <intrin.h>
+#endif
+
 namespace __asan {
 
 #define  REDZONE FLAG_redzone
@@ -59,10 +63,6 @@
   return (a & (alignment - 1)) == 0;
 }
 
-#ifdef _WIN32
-#include <intrin.h>
-#endif
-
 static inline size_t Log2(size_t x) {
   CHECK(IsPowerOfTwo(x));
 #if defined(_WIN64)