[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/nf_nat_amanda.c b/net/ipv4/netfilter/nf_nat_amanda.c
index bd93a1d..35a5aa6 100644
--- a/net/ipv4/netfilter/nf_nat_amanda.c
+++ b/net/ipv4/netfilter/nf_nat_amanda.c
@@ -24,7 +24,7 @@
 MODULE_LICENSE("GPL");
 MODULE_ALIAS("ip_nat_amanda");
 
-static unsigned int help(struct sk_buff **pskb,
+static unsigned int help(struct sk_buff *skb,
 			 enum ip_conntrack_info ctinfo,
 			 unsigned int matchoff,
 			 unsigned int matchlen,
@@ -53,7 +53,7 @@
 		return NF_DROP;
 
 	sprintf(buffer, "%u", port);
-	ret = nf_nat_mangle_udp_packet(pskb, exp->master, ctinfo,
+	ret = nf_nat_mangle_udp_packet(skb, exp->master, ctinfo,
 				       matchoff, matchlen,
 				       buffer, strlen(buffer));
 	if (ret != NF_ACCEPT)