[SK_BUFF]: Introduce icmp_hdr(), remove skb->h.icmph

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/dccp/ipv4.c

@@ -207,8 +207,8 @@ static void dccp_v4_err(struct sk_buff *skb, u32 info)
 							(iph->ihl << 2));
 	struct dccp_sock *dp;
 	struct inet_sock *inet;
-	const int type = skb->h.icmph->type;
-	const int code = skb->h.icmph->code;
+	const int type = icmp_hdr(skb)->type;
+	const int code = icmp_hdr(skb)->code;
 	struct sock *sk;
 	__u64 seq;
 	int err;