Omit "int" when using "unsigned" modifier

Source/wtf/text/WTFString.cpp

 /*
  * (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2010, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2007-2009 Torch Mobile, Inc.
  *
  * 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.
  *
@@ skipping 486 matching lines @@
     va_end(args);
 
     return StringImpl::create(reinterpret_cast<const LChar*>(buffer.data()), len);
 }
 
 String String::number(int number)
 {
     return numberToStringSigned<String>(number);
 }
 
-String String::number(unsigned int number)
+String String::number(unsigned number)
 {
     return numberToStringUnsigned<String>(number);
 }
 
 String String::number(long number)
 {
     return numberToStringSigned<String>(number);
 }
 
 String String::number(unsigned long number)
@@ skipping 748 matching lines @@
     buffer.append('\0');
     return buffer;
 }
 
 Vector<char> asciiDebug(String& string)
 {
     return asciiDebug(string.impl());
 }
 
 #endif