Have ElementTraversal / NodeTraversal's next() methods take a reference

Source/core/svg/SVGSVGElement.cpp

 /*
  * Copyright (C) 2004, 2005, 2006 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2010 Rob Buis <buis@kde.org>
  * Copyright (C) 2007 Apple Inc. 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 318 matching lines @@
 }
 
 void SVGSVGElement::forceRedraw()
 {
     // FIXME: Implement me (see bug 11275)
 }
 
 PassRefPtr<NodeList> SVGSVGElement::collectIntersectionOrEnclosureList(const SVGRect& rect, SVGElement* referenceElement, CollectIntersectionOrEnclosure collect) const
 {
     Vector<RefPtr<Node> > nodes;
-    Element* element = ElementTraversal::next(referenceElement ? referenceElement : this);
+    Element* element = ElementTraversal::next(*(referenceElement ? referenceElement : this));
     while (element) {
         if (element->isSVGElement()) {
             SVGElement* svgElement = toSVGElement(element);
             if (collect == CollectIntersectionList) {
                 if (checkIntersection(svgElement, rect))
                     nodes.append(element);
             } else {
                 if (checkEnclosure(svgElement, rect))
                     nodes.append(element);
             }
         }
 
-        element = ElementTraversal::next(element, referenceElement ? referenceElement : this);
+        element = ElementTraversal::next(*element, referenceElement ? referenceElement : this);
     }
     return StaticNodeList::adopt(nodes);
 }
 
 PassRefPtr<NodeList> SVGSVGElement::getIntersectionList(const SVGRect& rect, SVGElement* referenceElement) const
 {
     return collectIntersectionOrEnclosureList(rect, referenceElement, CollectIntersectionList);
 }
 
 PassRefPtr<NodeList> SVGSVGElement::getEnclosureList(const SVGRect& rect, SVGElement* referenceElement) const
@@ skipping 404 matching lines @@
 // getElementById on SVGSVGElement is restricted to only the child subtree defined by the <svg> element.
 // See http://www.w3.org/TR/SVG11/struct.html#InterfaceSVGSVGElement
 Element* SVGSVGElement::getElementById(const AtomicString& id) const
 {
     Element* element = treeScope().getElementById(id);
     if (element && element->isDescendantOf(this))
         return element;
 
     // Fall back to traversing our subtree. Duplicate ids are allowed, the first found will
     // be returned.
-    for (Node* node = firstChild(); node; node = NodeTraversal::next(node, this)) {
+    for (Node* node = firstChild(); node; node = NodeTraversal::next(*node, this)) {
         if (!node->isElementNode())
             continue;
 
         Element* element = toElement(node);
         if (element->getIdAttribute() == id)
             return element;
     }
     return 0;
 }
 
 }