Fix ASAN warning.

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 930 matching lines @@
   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));
 
   delete cache;
   source_a.Dispose();
   source_b.Dispose();
+  source_c.Dispose();
 }
 
 
 class SerializerOneByteResource
     : public v8::String::ExternalOneByteStringResource {
  public:
   SerializerOneByteResource(const char* data, size_t length)
       : data_(data), length_(length) {}
   virtual const char* data() const { return data_; }
   virtual size_t length() const { return length_; }
@@ skipping 244 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();
 }