Properly initialize args structure before passing it to ipfw_chk(): having

uninitialized args.inp is unhealthy for uid/gid/jail ipfw rules.

PR:		kern/92589
Approved by:	glebius (mentor)
MFC after:	1 week

sys/net/if_bridge.c

@@ -2647,6 +2647,7 @@ bridge_pfil(struct mbuf **mp, struct ifnet *bifp, struct ifnet *ifp, int dir)
 		args.oif = ifp;
 		args.next_hop = NULL;
 		args.eh = &eh2;
+		args.inp = NULL;	/* used by ipfw uid/gid/jail rules */
 		i = ip_fw_chk_ptr(&args);
 		*mp = args.m;
 

sys/net/if_ethersubr.c

@@ -426,6 +426,7 @@ ether_ipfw_chk(struct mbuf **m0, struct ifnet *dst,
 	args.rule = *rule;	/* matching rule to restart		*/
 	args.next_hop = NULL;	/* we do not support forward yet	*/
 	args.eh = &save_eh;	/* MAC header for bridged/MAC packets	*/
+	args.inp = NULL;	/* used by ipfw uid/gid/jail rules	*/
 	i = ip_fw_chk_ptr(&args);
 	m = args.m;
 	if (m != NULL) {