Fix a memory leak in AddonMgr::LoadFromDB(). This not leaks _yet_ because that function not used anywhere(if my eyez are right) but in the future can leaks.

--HG--
branch : trunk

src/game/AddonMgr.cpp

@@ -48,6 +48,7 @@ void AddonMgr::LoadFromDB()
         sLog.outError("an error occured while loading the table `addons`");
         exit(1);
     }
+    delete result;
 
     result = CharacterDatabase.PQuery("SELECT name, crc FROM addons");
     if(!result)