HRTFDatabaseLoader is not an absolute condition to run audioContext

Source/platform/audio/HRTFDatabaseLoader.cpp

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 27 matching lines @@
 
 namespace WebCore {
 
 // Singleton
 HRTFDatabaseLoader::LoaderMap* HRTFDatabaseLoader::s_loaderMap = 0;
 
 PassRefPtr<HRTFDatabaseLoader> HRTFDatabaseLoader::createAndLoadAsynchronouslyIfNecessary(float sampleRate)
 {
     ASSERT(isMainThread());
 
-    RefPtr<HRTFDatabaseLoader> loader;
-
     if (!s_loaderMap)
         s_loaderMap = adoptPtr(new LoaderMap()).leakPtr();
 
-    loader = s_loaderMap->get(sampleRate);
+    RefPtr<HRTFDatabaseLoader> loader = s_loaderMap->get(sampleRate);
     if (loader) {
         ASSERT(sampleRate == loader->databaseSampleRate());
         return loader;
     }
 
     loader = adoptRef(new HRTFDatabaseLoader(sampleRate));
     s_loaderMap->add(sampleRate, loader.get());
 
     loader->loadAsynchronously();
 
@@ skipping 47 matching lines @@
 
 void HRTFDatabaseLoader::waitForLoaderThreadCompletion()
 {
     MutexLocker locker(m_threadLock);
     m_databaseLoaderThread.clear();
 }
 
 } // namespace WebCore
 
 #endif // ENABLE(WEB_AUDIO)