netfilter: xtables: make use of xt_request_find_target

Signed-off-by: Jan Engelhardt <jengelh@medozas.de>

net/sched/act_ipt.c

@@ -46,8 +46,8 @@ static int ipt_init_target(struct ipt_entry_target *t, char *table, unsigned int
 
 	target = xt_request_find_target(AF_INET, t->u.user.name,
 					t->u.user.revision);
-	if (!target)
-		return -ENOENT;
+	if (IS_ERR(target))
+		return PTR_ERR(target);
 
 	t->u.kernel.target = target;
 	par.table     = table;