Move static field storage to end of Class instance

Change-Id: I90061999c9eef9d900e4269508b983a61f48b264
diff --git a/src/object_bitmap.h b/src/object_bitmap.h
index 3cc973c..3cb1aad 100644
--- a/src/object_bitmap.h
+++ b/src/object_bitmap.h
@@ -48,9 +48,9 @@
  public:
   static const size_t kAlignment = 8;
 
-  typedef void Callback(Object *obj, void *arg);
+  typedef void Callback(Object* obj, void *arg);
 
-  typedef void ScanCallback(Object *obj, void *finger, void *arg);
+  typedef void ScanCallback(Object* obj, void *finger, void *arg);
 
   typedef void SweepCallback(size_t numPtrs, void **ptrs, void *arg);