Avoid a SVG property list-induced leak (Oilpan).

Source/core/svg/SVGPathSegList.cpp

 /*
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005 Rob Buis <buis@kde.org>
  * Copyright (C) 2007 Eric Seidel <eric@webkit.org>
  * Copyright (C) Research In Motion Limited 2010. 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 40 matching lines @@
 {
     ASSERT(contextElement);
 }
 
 SVGPathSegList::~SVGPathSegList()
 {
 }
 
 DEFINE_TRACE(SVGPathSegList)
 {
-    visitor->trace(m_contextElement);
     SVGListPropertyHelper<SVGPathSegList, SVGPathSeg>::trace(visitor);
 }
 
 PassRefPtrWillBeRawPtr<SVGPathSegList> SVGPathSegList::clone()
 {
     RefPtrWillBeRawPtr<SVGPathSegList> svgPathSegList = adoptRefWillBeNoop(new SVGPathSegList(m_contextElement, byteStream()->copy()));
     svgPathSegList->invalidateList();
     return svgPathSegList.release();
 }
 
@@ skipping 144 matching lines @@
     }
 }
 
 float SVGPathSegList::calculateDistance(PassRefPtrWillBeRawPtr<SVGPropertyBase> to, SVGElement*)
 {
     // FIXME: Support paced animations.
     return -1;
 }
 
 }