Core: Cleanup locale handling.

It also fixes the recent problem of strange strings.

--HG--
branch : trunk

src/server/game/Entities/Object/Object.cpp

@@ -1634,7 +1634,7 @@ namespace Trinity
         public:
             MonsterChatBuilder(WorldObject const& obj, ChatMsg msgtype, int32 textId, uint32 language, uint64 targetGUID)
                 : i_object(obj), i_msgtype(msgtype), i_textId(textId), i_language(language), i_targetGUID(targetGUID) {}
-            void operator()(WorldPacket& data, int32 loc_idx)
+            void operator()(WorldPacket& data, LocaleConstant loc_idx)
             {
                 char const* text = sObjectMgr.GetTrinityString(i_textId,loc_idx);
 
@@ -1715,7 +1715,7 @@ void WorldObject::MonsterWhisper(int32 textId, uint64 receiver, bool IsBossWhisp
     if (!player || !player->GetSession())
         return;
 
-    uint32 loc_idx = player->GetSession()->GetSessionDbLocaleIndex();
+    LocaleConstant loc_idx = player->GetSession()->GetSessionDbLocaleIndex();
     char const* text = sObjectMgr.GetTrinityString(textId, loc_idx);
 
     WorldPacket data(SMSG_MESSAGECHAT, 200);