Fix more warnings on linux

Source/wtf/HashTraits.h

 /*
  * Copyright (C) 2005, 2006, 2007, 2008, 2011, 2012 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 172 matching lines @@
         typedef FirstTraitsArg FirstTraits;
         typedef SecondTraitsArg SecondTraits;
         typedef std::pair<typename FirstTraits::TraitType, typename SecondTraits::TraitType> TraitType;
         typedef std::pair<typename FirstTraits::EmptyValueType, typename SecondTraits::EmptyValueType> EmptyValueType;
 
         static const bool emptyValueIsZero = FirstTraits::emptyValueIsZero && SecondTraits::emptyValueIsZero;
         static EmptyValueType emptyValue() { return std::make_pair(FirstTraits::emptyValue(), SecondTraits::emptyValue()); }
 
         static const bool needsDestruction = FirstTraits::needsDestruction || SecondTraits::needsDestruction;
 
-        static const int minimumTableSize = FirstTraits::minimumTableSize;
+        static const unsigned minimumTableSize = FirstTraits::minimumTableSize;
 
         static void constructDeletedValue(TraitType& slot) { FirstTraits::constructDeletedValue(slot.first); }
         static bool isDeletedValue(const TraitType& value) { return FirstTraits::isDeletedValue(value.first); }
     };
 
     template<typename First, typename Second>
     struct HashTraits<std::pair<First, Second> > : public PairHashTraits<HashTraits<First>, HashTraits<Second> > { };
 
     template<typename KeyTypeArg, typename ValueTypeArg>
     struct KeyValuePair {
@@ skipping 25 matching lines @@
         typedef KeyTraitsArg KeyTraits;
         typedef ValueTraitsArg ValueTraits;
         typedef KeyValuePair<typename KeyTraits::TraitType, typename ValueTraits::TraitType> TraitType;
         typedef KeyValuePair<typename KeyTraits::EmptyValueType, typename ValueTraits::EmptyValueType> EmptyValueType;
 
         static const bool emptyValueIsZero = KeyTraits::emptyValueIsZero && ValueTraits::emptyValueIsZero;
         static EmptyValueType emptyValue() { return KeyValuePair<typename KeyTraits::EmptyValueType, typename ValueTraits::EmptyValueType>(KeyTraits::emptyValue(), ValueTraits::emptyValue()); }
 
         static const bool needsDestruction = KeyTraits::needsDestruction || ValueTraits::needsDestruction;
 
-        static const int minimumTableSize = KeyTraits::minimumTableSize;
+        static const unsigned minimumTableSize = KeyTraits::minimumTableSize;
 
         static void constructDeletedValue(TraitType& slot) { KeyTraits::constructDeletedValue(slot.key); }
         static bool isDeletedValue(const TraitType& value) { return KeyTraits::isDeletedValue(value.key); }
     };
 
     template<typename Key, typename Value>
     struct HashTraits<KeyValuePair<Key, Value> > : public KeyValuePairHashTraits<HashTraits<Key>, HashTraits<Value> > { };
 
     template<typename T>
     struct NullableHashTraits : public HashTraits<T> {
         static const bool emptyValueIsZero = false;
         static T emptyValue() { return reinterpret_cast<T>(1); }
     };
 
 } // namespace WTF
 
 using WTF::HashTraits;
 using WTF::PairHashTraits;
 using WTF::NullableHashTraits;
 using WTF::SimpleClassHashTraits;
 
 #endif // WTF_HashTraits_h