Merge 110226 - NULL renderer possible in WebCore::HTMLInputElement::setCanReceiveDroppedFiles()

Source/WebCore/html/HTMLInputElement.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  * Copyright (C) 2007 Samuel Weinig (sam@webkit.org)
  * Copyright (C) 2010 Google Inc. All rights reserved.
  * Copyright (C) 2008 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
@@ skipping 1356 matching lines @@
 bool HTMLInputElement::canReceiveDroppedFiles() const
 {
     return m_canReceiveDroppedFiles;
 }
 
 void HTMLInputElement::setCanReceiveDroppedFiles(bool canReceiveDroppedFiles)
 {
     if (m_canReceiveDroppedFiles == canReceiveDroppedFiles)
         return;
     m_canReceiveDroppedFiles = canReceiveDroppedFiles;
-    renderer()->updateFromElement();
+    if (renderer())
+        renderer()->updateFromElement();
 }
 
 String HTMLInputElement::visibleValue() const
 {
     return m_inputType->visibleValue();
 }
 
 String HTMLInputElement::convertFromVisibleValue(const String& visibleValue) const
 {
     return m_inputType->convertFromVisibleValue(visibleValue);
@@ skipping 435 matching lines @@
     if (newValue != m_valueIfDirty)
         setValue(newValue);
 }
 
 String HTMLInputElement::defaultToolTip() const
 {
     return m_inputType->defaultToolTip();
 }
 
 } // namespace