Pacify GCmole.

test/cctest/test-dictionary.cc

Index: test/cctest/test-dictionary.cc
diff --git a/test/cctest/test-dictionary.cc b/test/cctest/test-dictionary.cc
index 9a1914237fe185f841125051b7feaac12c180416..14e5d69d43714bba76b9e66a6c96026590f60b88 100644
--- a/test/cctest/test-dictionary.cc
+++ b/test/cctest/test-dictionary.cc
@@ -99,8 +99,8 @@ static void TestHashMap(Handle<HashMap> table) {
   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());
   }
 }