Oilpan: KeyframeEffect::m_target shouldn't become stale

Source/core/dom/ElementRareData.h

 /*
  * Copyright (C) 2008, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2008 David Smith <catfish.man@gmail.com>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 154 matching lines @@
     , m_tabindex(0)
     , m_proxyCount(0)
     , m_minimumSizeForResizing(defaultMinimumSizeForResizing())
 {
     m_isElementRareData = true;
 }
 
 inline ElementRareData::~ElementRareData()
 {
 #if !ENABLE(OILPAN)
+    if (m_elementAnimations)
+        m_elementAnimations->dispose();
     ASSERT(!m_shadow);
 #endif
     ASSERT(!m_generatedBefore);
     ASSERT(!m_generatedAfter);
     ASSERT(!m_generatedFirstLetter);
     ASSERT(!m_backdrop);
 }
 
 inline bool ElementRareData::hasPseudoElements() const
 {
@@ skipping 48 matching lines @@
     case FIRST_LETTER:
         return m_generatedFirstLetter.get();
     default:
         return 0;
     }
 }
 
 } // namespace
 
 #endif // ElementRareData_h