Reuse SIRT for C++ references

Change-Id: I8310e55da42f55f7ec60f6b17face436c77a979f
diff --git a/test/ReferenceMap/stack_walk_refmap_jni.cc b/test/ReferenceMap/stack_walk_refmap_jni.cc
index c19ccf9..ca46569 100644
--- a/test/ReferenceMap/stack_walk_refmap_jni.cc
+++ b/test/ReferenceMap/stack_walk_refmap_jni.cc
@@ -29,7 +29,7 @@
 
   void VisitFrame(const Frame& frame, uintptr_t pc) {
     Method* m = frame.GetMethod();
-    if (!m ||m->IsNative()) {
+    if (!m || m->IsNative()) {
       return;
     }
     LOG(INFO) << "At " << PrettyMethod(m, false);