Code problems detected by cppcheck

Source/core/xml/XPathFunctions.cpp

 /*
  * Copyright (C) 2005 Frerich Raabe <raabe@kde.org>
  * Copyright (C) 2006, 2009 Apple Inc.
  * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
  *
  * 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
@@ skipping 282 matching lines @@
 
 void Function::setArguments(Vector<OwnPtr<Expression> >& args)
 {
     ASSERT(!subExprCount());
 
     // Some functions use context node as implicit argument, so when explicit arguments are added, they may no longer be context node sensitive.
     if (m_name != "lang" && !args.isEmpty())
         setIsContextNodeSensitive(false);
 
     Vector<OwnPtr<Expression> >::iterator end = args.end();
-    for (Vector<OwnPtr<Expression> >::iterator it = args.begin(); it != end; it++)
+    for (Vector<OwnPtr<Expression> >::iterator it = args.begin(); it != end; ++it)
         addSubExpression(it->release());
 }
 
 Value FunLast::evaluate() const
 {
     return Expression::evaluationContext().size;
 }
 
 Value FunPosition::evaluate() const
 {
@@ skipping 430 matching lines @@
         return 0;
 
     Function* function = functionRec->factoryFn();
     function->setArguments(args);
     function->setName(name);
     return function;
 }
 
 }
 }