Implement QueryResult_AutoPtr type which is ACE's reference counted auto_ptr(ACE_Refcounted_Auto_Ptr) for QueryResult pointers.

Use this auto_ptr for every DB queries(except QueryNamedResult yet).

This patch guarantees NO memory leaks from QueryResult pointers.

Thanks to raczman for the idea and for the helping to make this patch.

--HG--
branch : trunk

src/game/ItemEnchantmentMgr.cpp

@@ -55,7 +55,7 @@ void LoadRandomEnchantmentsTable()
     float chance;
     uint32 count = 0;
 
-    QueryResult *result = WorldDatabase.Query("SELECT entry, ench, chance FROM item_enchantment_template");
+    QueryResult_AutoPtr result = WorldDatabase.Query("SELECT entry, ench, chance FROM item_enchantment_template");
 
     if (result)
     {
@@ -76,8 +76,6 @@ void LoadRandomEnchantmentsTable()
             ++count;
         } while (result->NextRow());
 
-        delete result;
-
         sLog.outString();
         sLog.outString( ">> Loaded %u Item Enchantment definitions", count );
     }