[NETFILTER]: Replace sk_buff ** with sk_buff *

With all the users of the double pointers removed, this patch mops up by
finally replacing all occurances of sk_buff ** in the netfilter API by
sk_buff *.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/sched/act_ipt.c b/net/sched/act_ipt.c
index 6b407ec..fa006e0 100644
--- a/net/sched/act_ipt.c
+++ b/net/sched/act_ipt.c
@@ -202,11 +202,7 @@
 	/* yes, we have to worry about both in and out dev
 	 worry later - danger - this API seems to have changed
 	 from earlier kernels */
-
-	/* iptables targets take a double skb pointer in case the skb
-	 * needs to be replaced. We don't own the skb, so this must not
-	 * happen. The pskb_expand_head above should make sure of this */
-	ret = ipt->tcfi_t->u.kernel.target->target(&skb, skb->dev, NULL,
+	ret = ipt->tcfi_t->u.kernel.target->target(skb, skb->dev, NULL,
 						   ipt->tcfi_hook,
 						   ipt->tcfi_t->u.kernel.target,
 						   ipt->tcfi_t->data);