[SK_BUFF]: Introduce ip_hdr(), remove skb->nh.iph

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/cipso_ipv4.c b/net/ipv4/cipso_ipv4.c
index b0182aa..11a3404 100644
--- a/net/ipv4/cipso_ipv4.c
+++ b/net/ipv4/cipso_ipv4.c
@@ -1676,7 +1676,7 @@
  */
 void cipso_v4_error(struct sk_buff *skb, int error, u32 gateway)
 {
-	if (skb->nh.iph->protocol == IPPROTO_ICMP || error != -EACCES)
+	if (ip_hdr(skb)->protocol == IPPROTO_ICMP || error != -EACCES)
 		return;
 
 	if (gateway)