Added missing sql updates

--HG--
branch : trunk

sql/characters.sql

@@ -1395,8 +1395,9 @@ UNLOCK TABLES;
 DROP TABLE IF EXISTS `instance_reset`;
 CREATE TABLE `instance_reset` (
   `mapid` int(11) unsigned NOT NULL default '0',
+  `difficulty` tinyint(1) unsigned NOT NULL default '0',
   `resettime` bigint(40) NOT NULL default '0',
-  PRIMARY KEY  (`mapid`)
+  PRIMARY KEY  (`mapid`,`difficulty`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8;
 
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