netfilter: ip_tables: fix compile with debug

Signed-off-by: Sebastian Andrzej Siewior <[e-mail]>
Signed-off-by: Patrick McHardy <[e-mail]>

net/ipv4/netfilter/ip_tables.c

···
 	const struct xt_entry_target *t;
 
 	if (!ip_checkentry(&e->ip)) {
-		duprintf("ip check failed %p %s.\n", e, par->match->name);
+		duprintf("ip check failed %p %s.\n", e, name);
 		return -EINVAL;
 	}