[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/ipv4/netfilter/ipt_SAME.c b/net/ipv4/netfilter/ipt_SAME.c
index 97641f1..8988571 100644
--- a/net/ipv4/netfilter/ipt_SAME.c
+++ b/net/ipv4/netfilter/ipt_SAME.c
@@ -104,7 +104,7 @@
 }
 
 static unsigned int
-same_target(struct sk_buff **pskb,
+same_target(struct sk_buff *skb,
 		const struct net_device *in,
 		const struct net_device *out,
 		unsigned int hooknum,
@@ -121,7 +121,7 @@
 
 	NF_CT_ASSERT(hooknum == NF_IP_PRE_ROUTING ||
 			hooknum == NF_IP_POST_ROUTING);
-	ct = nf_ct_get(*pskb, &ctinfo);
+	ct = nf_ct_get(skb, &ctinfo);
 
 	t = &ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple;