Have NodeTraversal::nextSkippingChildren() take a reference

Source/core/editing/CompositeEditCommand.cpp

 /*
  * Copyright (C) 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 997 matching lines @@
 
     if (start.deprecatedNode() != end.deprecatedNode() && !start.deprecatedNode()->isDescendantOf(end.deprecatedNode())) {
         // If end is not a descendant of outerNode we need to
         // find the first common ancestor to increase the scope
         // of our nextSibling traversal.
         while (!end.deprecatedNode()->isDescendantOf(outerNode.get())) {
             outerNode = outerNode->parentNode();
         }
 
         RefPtr<Node> startNode = start.deprecatedNode();
-        for (RefPtr<Node> node = NodeTraversal::nextSkippingChildren(startNode.get(), outerNode.get()); node; node = NodeTraversal::nextSkippingChildren(node.get(), outerNode.get())) {
+        for (RefPtr<Node> node = NodeTraversal::nextSkippingChildren(*startNode, outerNode.get()); node; node = NodeTraversal::nextSkippingChildren(*node, outerNode.get())) {
             // Move lastNode up in the tree as much as node was moved up in the
             // tree by NodeTraversal::nextSkippingChildren, so that the relative depth between
             // node and the original start node is maintained in the clone.
             while (startNode->parentNode() != node->parentNode()) {
                 startNode = startNode->parentNode();
                 lastNode = lastNode->parentNode();
             }
 
             RefPtr<Node> clonedNode = node->cloneNode(true);
             insertNodeAfter(clonedNode, lastNode);
@@ skipping 434 matching lines @@
     return node.release();
 }
 
 PassRefPtr<Element> createBlockPlaceholderElement(Document& document)
 {
     RefPtr<Element> breakNode = document.createElement(brTag, false);
     return breakNode.release();
 }
 
 } // namespace WebCore