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

Source/core/accessibility/AXObject.cpp

Index: Source/core/accessibility/AXObject.cpp
diff --git a/Source/core/accessibility/AXObject.cpp b/Source/core/accessibility/AXObject.cpp
index 645d886053c0f331e57822afabb9acd466199c57..1c247f6cb0658f79118d2aba496946f222f02182 100644
--- a/Source/core/accessibility/AXObject.cpp
+++ b/Source/core/accessibility/AXObject.cpp
@@ -526,7 +526,7 @@ AXObject* AXObject::firstAccessibleObjectFromNode(const Node* node)
     AXObjectCache* cache = node->document().axObjectCache();
     AXObject* accessibleObject = cache->getOrCreate(node->renderer());
     while (accessibleObject && accessibleObject->accessibilityIsIgnored()) {
-        node = NodeTraversal::next(node);
+        node = NodeTraversal::next(*node);
 
         while (node && !node->renderer())
             node = NodeTraversal::nextSkippingChildren(node);