FYI: Compile fixes when always using a local for method return value

Source/modules/filesystem/EntrySync.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:
  *
  *     * 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
@@ skipping 60 matching lines @@
     return helper->getResult(exceptionState);
 }
 
 void EntrySync::remove(ExceptionState& exceptionState) const
 {
     RefPtr<VoidSyncCallbackHelper> helper = VoidSyncCallbackHelper::create();
     m_fileSystem->remove(this, helper->successCallback(), helper->errorCallback(), DOMFileSystemBase::Synchronous);
     helper->getResult(exceptionState);
 }
 
-EntrySync* EntrySync::getParent() const
+DirectoryEntrySync* EntrySync::getParent() const
 {
     // Sync verion of getParent doesn't throw exceptions.
     String parentPath = DOMFilePath::getDirectory(fullPath());
     return DirectoryEntrySync::create(m_fileSystem, parentPath);
 }
 
 EntrySync::EntrySync(DOMFileSystemBase* fileSystem, const String& fullPath)
     : EntryBase(fileSystem, fullPath)
 {
     ScriptWrappable::init(this);
 }
 
 void EntrySync::trace(Visitor* visitor)
 {
     EntryBase::trace(visitor);
 }
 
 }