Pass around CSSSelector by reference instead of pointer

Source/core/css/resolver/StyleResolver.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 321 matching lines @@
 
     unsigned m_accessCount;
 };
 
 inline bool checkRegionSelector(const CSSSelector* regionSelector, Element* regionElement)
 {
     if (!regionSelector || !regionElement)
         return false;
 
     SelectorChecker selectorChecker(regionElement->document(), SelectorChecker::QueryingRules);
-    for (const CSSSelector* s = regionSelector; s; s = CSSSelectorList::next(s)) {
-        SelectorChecker::SelectorCheckingContext selectorCheckingContext(s, regionElement, SelectorChecker::VisitedMatchDisabled);
+    for (const CSSSelector* s = regionSelector; s; s = CSSSelectorList::next(*s)) {
+        SelectorChecker::SelectorCheckingContext selectorCheckingContext(*s, regionElement, SelectorChecker::VisitedMatchDisabled);
         if (selectorChecker.match(selectorCheckingContext, DOMSiblingTraversalStrategy()) == SelectorChecker::SelectorMatches)
             return true;
     }
     return false;
 }
 
 } // namespace WebCore
 
 #endif // StyleResolver_h