Have NodeTraversal::nextSkippingChildren() take a reference

Source/core/dom/TreeWalker.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2000 Frederik Holljen (frederik.holljen@hig.no)
  * Copyright (C) 2001 Peter Kelly (pmk@post.com)
  * Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
  * Copyright (C) 2004, 2008 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
@@ skipping 249 matching lines @@
     while (Node* firstChild = node->firstChild()) {
         node = firstChild;
         short acceptNodeResult = acceptNode(state, node.get());
         if (state && state->hadException())
             return 0;
         if (acceptNodeResult == NodeFilter::FILTER_ACCEPT)
             return setCurrent(node.release());
         if (acceptNodeResult == NodeFilter::FILTER_REJECT)
             break;
     }
-    while (Node* nextSibling = NodeTraversal::nextSkippingChildren(node.get(), root())) {
+    while (Node* nextSibling = NodeTraversal::nextSkippingChildren(*node, root())) {
         node = nextSibling;
         short acceptNodeResult = acceptNode(state, node.get());
         if (state && state->hadException())
             return 0;
         if (acceptNodeResult == NodeFilter::FILTER_ACCEPT)
             return setCurrent(node.release());
         if (acceptNodeResult == NodeFilter::FILTER_SKIP)
             goto Children;
     }
     return 0;
 }
 
 } // namespace WebCore