Omit "int" when using "unsigned" modifier

Source/core/xml/XPathFunctions.h

 /*
  * Copyright (C) 2005 Frerich Raabe <raabe@kde.org>
  * Copyright (C) 2006, 2009 Apple Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
@@ skipping 22 matching lines @@
 
     namespace XPath {
 
         class Function : public Expression {
         public:
             void setArguments(Vector<OwnPtr<Expression> >&);
             void setName(const String& name) { m_name = name; }
         protected:
             Expression* arg(int pos) { return subExpr(pos); }
             const Expression* arg(int pos) const { return subExpr(pos); }
-            unsigned int argCount() const { return subExprCount(); }
+            unsigned argCount() const { return subExprCount(); }
             String name() const { return m_name; }
 
         private:
             String m_name;
         };
 
         Function* createFunction(const String& name);
         Function* createFunction(const String& name, Vector<OwnPtr<Expression> >&);
 
     } // namespace XPath
 
 } // namespace WebCore
 
 #endif // XPathFunctions_h