Oilpan: fix build after r188805, part 2.

Source/modules/fetch/FetchManager.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "modules/fetch/FetchManager.h"
 
 #include "bindings/core/v8/ExceptionState.h"
 #include "bindings/core/v8/ScriptPromiseResolver.h"
 #include "bindings/core/v8/ScriptState.h"
@@ skipping 403 matching lines @@
 {
     ASSERT(!m_isStopped);
     m_isStopped = true;
     for (auto& loader : m_loaders) {
         loader->cleanup();
     }
 }
 
 void FetchManager::onLoaderFinished(Loader* loader)
 {
-    // We don't use remove here, becuase it may cause recursive deletion.
-    OwnPtr<Loader> p = m_loaders.take(loader);
+    // We don't use remove here, because it may cause recursive deletion.
+    OwnPtrWillBeRawPtr<Loader> p = m_loaders.take(loader);
+    ALLOW_UNUSED_LOCAL(p);
 }
 
 void FetchManager::trace(Visitor* visitor)
 {
 #if ENABLE(OILPAN)
     visitor->trace(m_executionContext);
     visitor->trace(m_loaders);
 #endif
 }
 
 } // namespace blink