Use SKIP_WITH_HWASAN macro from libbase.

Change-Id: I83681d2191bf4184e52d84d1107d61065927bb24
diff --git a/tests/malloc_test.cpp b/tests/malloc_test.cpp
index f157ec4..1b875cd 100644
--- a/tests/malloc_test.cpp
+++ b/tests/malloc_test.cpp
@@ -41,6 +41,7 @@
 #include <tinyxml2.h>
 
 #include <android-base/file.h>
+#include <android-base/test_utils.h>
 
 #include "utils.h"