Pacify GCmole.

test/cctest/test-dictionary.cc

 // Copyright 2011 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 81 matching lines @@
     CHECK_EQ(table->FindEntry(key), HashMap::kNotFound);
     CHECK_EQ(table->Lookup(key), CcTest::heap()->the_hole_value());
     CHECK(key->GetIdentityHash()->IsSmi());
   }
 
   // Keys that don't have an identity hash should not be found and also
   // should not get an identity hash code generated.
   for (int i = 0; i < 100; i++) {
     Handle<JSReceiver> key = factory->NewJSArray(7);
     CHECK_EQ(table->Lookup(key), CcTest::heap()->the_hole_value());
-    CHECK_EQ(key->GetIdentityHash(),
-             CcTest::heap()->undefined_value());
+    Object* identity_hash = key->GetIdentityHash();
+    CHECK_EQ(identity_hash, CcTest::heap()->undefined_value());
   }
 }
 
 
 TEST(HashMap) {
   LocalContext context;
   v8::HandleScope scope(context->GetIsolate());
   Isolate* isolate = CcTest::i_isolate();
   TestHashMap(ObjectHashTable::New(isolate, 23));
   TestHashMap(isolate->factory()->NewOrderedHashMap());
@@ skipping 131 matching lines @@
   LocalContext context;
   v8::HandleScope scope(context->GetIsolate());
   Isolate* isolate = CcTest::i_isolate();
   TestHashMapCausesGC(ObjectHashTable::New(isolate, 1));
   TestHashMapCausesGC(isolate->factory()->NewOrderedHashMap());
 }
 #endif
 
 
 }