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

Source/web/WebFrameImpl.cpp

Index: Source/web/WebFrameImpl.cpp
diff --git a/Source/web/WebFrameImpl.cpp b/Source/web/WebFrameImpl.cpp
index 2741daa25f8d9e57bf9c099a05df190e180ad94c..f78f5a56e1026314fad181862763621ffae506f5 100644
--- a/Source/web/WebFrameImpl.cpp
+++ b/Source/web/WebFrameImpl.cpp
@@ -2319,7 +2319,7 @@ void WebFrameImpl::setFindEndstateFocusAndSelection()
         // This, for example, sets focus to the first link if you search for
         // text and text that is within one or more links.
         node = m_activeMatch->firstNode();
-        for (; node && node != m_activeMatch->pastLastNode(); node = NodeTraversal::next(node)) {
+        for (; node && node != m_activeMatch->pastLastNode(); node = NodeTraversal::next(*node)) {
             if (!node->isElementNode())
                 continue;
             Element* element = toElement(node);