[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/include/linux/netfilter_ipv4.h b/include/linux/netfilter_ipv4.h
index ceae87a..1a63adf 100644
--- a/include/linux/netfilter_ipv4.h
+++ b/include/linux/netfilter_ipv4.h
@@ -75,8 +75,8 @@
 #define SO_ORIGINAL_DST 80
 
 #ifdef __KERNEL__
-extern int ip_route_me_harder(struct sk_buff **pskb, unsigned addr_type);
-extern int ip_xfrm_me_harder(struct sk_buff **pskb);
+extern int ip_route_me_harder(struct sk_buff *skb, unsigned addr_type);
+extern int ip_xfrm_me_harder(struct sk_buff *skb);
 extern __sum16 nf_ip_checksum(struct sk_buff *skb, unsigned int hook,
 				   unsigned int dataoff, u_int8_t protocol);
 #endif /*__KERNEL__*/