Fix compilation after r24639

test/cctest/test-serialize.cc

 // Copyright 2007-2010 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 915 matching lines @@
         source_str, Handle<String>(), 0, 0, false,
         Handle<Context>(isolate->native_context()), NULL, &cache,
         v8::ScriptCompiler::kConsumeCodeCache, NOT_NATIVES_CODE);
   }
   CHECK_NE(*orig, *copy);
 
   Handle<JSFunction> copy_fun =
       isolate->factory()->NewFunctionFromSharedFunctionInfo(
           copy, isolate->native_context());
 
-  Execution::Call(isolate, copy_fun, global, 0, NULL);
+  USE(Execution::Call(isolate, copy_fun, global, 0, NULL));
 
   CHECK_EQ(600000 + 700000, CompileRun("(a + b).length")->Int32Value());
   CHECK_EQ(500000 + 600000, CompileRun("(b + c).length")->Int32Value());
   Heap* heap = isolate->heap();
   CHECK(heap->InSpace(*v8::Utils::OpenHandle(*CompileRun("a")->ToString()),
                       OLD_DATA_SPACE));
   CHECK(heap->InSpace(*v8::Utils::OpenHandle(*CompileRun("b")->ToString()),
                       OLD_DATA_SPACE));
   CHECK(heap->InSpace(*v8::Utils::OpenHandle(*CompileRun("c")->ToString()),
                       OLD_DATA_SPACE));
@@ skipping 258 matching lines @@
     {
       DisallowCompilation no_compile(reinterpret_cast<Isolate*>(isolate2));
       script = v8::ScriptCompiler::CompileUnbound(
           isolate2, &source, v8::ScriptCompiler::kConsumeCodeCache);
     }
     v8::Local<v8::Value> result = script->BindToCurrentContext()->Run();
     CHECK(result->ToString()->Equals(v8_str("abcdef")));
   }
   isolate2->Dispose();
 }