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

Source/core/editing/ReplaceSelectionCommand.h

Index: Source/core/editing/ReplaceSelectionCommand.h
diff --git a/Source/core/editing/ReplaceSelectionCommand.h b/Source/core/editing/ReplaceSelectionCommand.h
index dfe26478075ab5cc673a389b5fb80419f0dd96ff..ee3879b22588302654f7274113164c24e4dbca55 100644
--- a/Source/core/editing/ReplaceSelectionCommand.h
+++ b/Source/core/editing/ReplaceSelectionCommand.h
@@ -67,7 +67,7 @@ private:
 
         Node* firstNodeInserted() const { return m_firstNodeInserted.get(); }
         Node& lastLeafInserted() const { ASSERT(m_lastNodeInserted); return m_lastNodeInserted->lastDescendant(); }
-        Node* pastLastLeaf() const { return m_lastNodeInserted ? NodeTraversal::next(&lastLeafInserted()) : 0; }
+        Node* pastLastLeaf() const { return m_lastNodeInserted ? NodeTraversal::next(lastLeafInserted()) : 0; }
 
     private:
         RefPtr<Node> m_firstNodeInserted;