net_sched: Remove unnecessary checks for act->ops

Remove unnecessary checks for act->ops
(suggested by Eric Dumazet).

Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
index 12e882e..d8c42b1 100644
--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c
@@ -577,7 +577,7 @@
 		} else if (exts->police) {
 			struct tc_action *act = tcf_exts_first_act(exts);
 			nest = nla_nest_start(skb, exts->police);
-			if (nest == NULL)
+			if (nest == NULL || !act)
 				goto nla_put_failure;
 			if (tcf_action_dump_old(skb, act, 0, 0) < 0)
 				goto nla_put_failure;