Silence another VS warning

test/cctest/test-types.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 123 matching lines @@
     return reinterpret_cast<intptr_t>(t) & 1;
   }
   static bool IsClass(ZoneType* t) { return IsTagged(t, 0); }
   static bool IsConstant(ZoneType* t) { return IsTagged(t, 1); }
   static bool IsUnion(ZoneType* t) { return IsTagged(t, 2); }
 
   static ZoneList<void*>* AsTagged(ZoneType* t) {
     return reinterpret_cast<ZoneList<void*>*>(t);
   }
   static int AsBitset(ZoneType* t) {
-    return reinterpret_cast<intptr_t>(t) >> 1;
+    return static_cast<int>(reinterpret_cast<intptr_t>(t) >> 1);
   }
   static Map* AsClass(ZoneType* t) {
     return *reinterpret_cast<Map**>(AsTagged(t)->at(1));
   }
   static Object* AsConstant(ZoneType* t) {
     return *reinterpret_cast<Object**>(AsTagged(t)->at(1));
   }
   static ZoneList<ZoneType*>* AsUnion(ZoneType* t) {
     return reinterpret_cast<ZoneList<ZoneType*>*>(AsTagged(t));
   }
@@ skipping 644 matching lines @@
   ZoneTests().Union();
   HeapTests().Union();
 }
 
 
 TEST(Intersect) {
   CcTest::InitializeVM();
   ZoneTests().Intersect();
   HeapTests().Intersect();
 }