Have NodeTraversal::nextSkippingChildren() take a reference

Source/core/page/TouchDisambiguation.cpp

Index: Source/core/page/TouchDisambiguation.cpp
diff --git a/Source/core/page/TouchDisambiguation.cpp b/Source/core/page/TouchDisambiguation.cpp
index 248c498cf29b5f0d78045cb2a1be7e1621563de6..5fda7d8dc9309927ef6177e4b69b079f544b7f64 100644
--- a/Source/core/page/TouchDisambiguation.cpp
+++ b/Source/core/page/TouchDisambiguation.cpp
@@ -59,7 +59,7 @@ static IntRect boundingBoxForEventNodes(Node* eventNode)
     while (node) {
         // Skip the whole sub-tree if the node doesn't propagate events.
         if (node != eventNode && node->willRespondToMouseClickEvents()) {
-            node = NodeTraversal::nextSkippingChildren(node, eventNode);
+            node = NodeTraversal::nextSkippingChildren(*node, eventNode);
             continue;
         }
         result.unite(node->pixelSnappedBoundingBox());