Have NodeTraversal::nextSkippingChildren() take a reference

Source/core/editing/htmlediting.cpp

 /*
  * Copyright (C) 2004, 2005, 2006, 2007 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 587 matching lines @@
             break;
     }
 
     return highest;
 }
 
 static bool hasARenderedDescendant(Node* node, Node* excludedNode)
 {
     for (Node* n = node->firstChild(); n;) {
         if (n == excludedNode) {
-            n = NodeTraversal::nextSkippingChildren(n, node);
+            n = NodeTraversal::nextSkippingChildren(*n, node);
             continue;
         }
         if (n->renderer())
             return true;
         n = NodeTraversal::next(*n, node);
     }
     return false;
 }
 
 Node* highestNodeToRemoveInPruning(Node* node, Node* excludeNode)
@@ skipping 534 matching lines @@
     // if the selection starts just before a paragraph break, skip over it
     if (isEndOfParagraph(visiblePosition))
         return visiblePosition.next().deepEquivalent().downstream();
 
     // otherwise, make sure to be at the start of the first selected node,
     // instead of possibly at the end of the last node before the selection
     return visiblePosition.deepEquivalent().downstream();
 }
 
 } // namespace WebCore