Merge 108152

Source/WebCore/svg/SVGTRefElement.cpp

 /*
  * Copyright (C) 2004, 2005 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006 Rob Buis <buis@kde.org>
  * Copyright (C) Research In Motion Limited 2011. All rights reserved.
  *
  * 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.
  *
@@ skipping 128 matching lines @@
     }
 }
 
 SVGTRefElement::~SVGTRefElement()
 {
     clearEventListener();
 }
 
 void SVGTRefElement::updateReferencedText()
 {
-    Element* target = SVGURIReference::targetElementFromIRIString(href(), document());
-    ASSERT(target);
     String textContent;
-    if (target->parentNode())
+    if (Element* target = SVGURIReference::targetElementFromIRIString(href(), document()))
         textContent = target->textContent();
     ExceptionCode ignore = 0;
     if (!ensureShadowRoot()->firstChild())
         shadowRoot()->appendChild(SVGShadowText::create(document(), textContent), ignore);
     else
         shadowRoot()->firstChild()->setTextContent(textContent, ignore);
 }
 
 bool SVGTRefElement::isSupportedAttribute(const QualifiedName& attrName)
 {
@@ skipping 105 matching lines @@
 {
     if (m_eventListener) {
         m_eventListener->clear();
         m_eventListener = 0;
     }
 }
 
 }
 
 #endif // ENABLE(SVG)