*Handle disarm offhand and ranged weapon, since now disarm affects all bonuses given by item.

--HG--
branch : trunk

src/game/SpellHandler.cpp

@@ -50,7 +50,7 @@ void WorldSession::HandleUseItemOpcode(WorldPacket& recvPacket)
 
     recvPacket >> bagIndex >> slot >> cast_count >> spellid >> item_guid >> glyphIndex >> unk_flags;
 
-    Item *pItem = pUser->GetItemByPos(bagIndex, slot);
+    Item *pItem = pUser->GetUseableItemByPos(bagIndex, slot);
     if(!pItem)
     {
         pUser->SendEquipError(EQUIP_ERR_ITEM_NOT_FOUND, NULL, NULL );