Omit "int" when using "unsigned" modifier

Source/wtf/text/AtomicString.h

 /*
  * Copyright (C) 2004, 2005, 2006, 2008 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,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 78 matching lines @@
     operator const String&() const { return m_string; }
     const String& string() const { return m_string; };
 
     StringImpl* impl() const { return m_string.impl(); }
 
     bool is8Bit() const { return m_string.is8Bit(); }
     const LChar* characters8() const { return m_string.characters8(); }
     const UChar* characters16() const { return m_string.characters16(); }
     unsigned length() const { return m_string.length(); }
 
-    UChar operator[](unsigned int i) const { return m_string[i]; }
+    UChar operator[](unsigned i) const { return m_string[i]; }
 
     bool contains(UChar c) const { return m_string.contains(c); }
     bool contains(const LChar* s, bool caseSensitive = true) const
         { return m_string.contains(s, caseSensitive); }
     bool contains(const String& s, bool caseSensitive = true) const
         { return m_string.contains(s, caseSensitive); }
 
     size_t find(UChar c, size_t start = 0) const { return m_string.find(c, start); }
     size_t find(const LChar* s, size_t start = 0, bool caseSentitive = true) const
         { return m_string.find(s, start, caseSentitive); }
@@ skipping 154 matching lines @@
 using WTF::nullAtom;
 using WTF::emptyAtom;
 using WTF::starAtom;
 using WTF::xmlAtom;
 using WTF::xmlnsAtom;
 using WTF::xlinkAtom;
 #endif
 
 #include "wtf/text/StringConcatenate.h"
 #endif // AtomicString_h