Another mistake.. shit

git-svn-id: https://svn.code.sf.net/p/rathena/svn/trunk@7126 54d463be-8e91-2dee-dedb-b68131a5f0ec

src/map/script.c

@@ -10209,7 +10209,7 @@ int buildin_npcshopdelitem(struct script_state *st)
 	nd = npc_name2id(npcname);
 
 	if (nd && nd->bl.subtype==SHOP) {
-		while (nd->u.shop_item[n].nameid)
+		while (nd->u.shop_item[size].nameid)
 			size++;
 
 		while (st->end > st->start+i) {