[SK_BUFF]: unions of just one member don't get anything done, kill them

Renaming skb->h to skb->transport_header, skb->nh to skb->network_header and
skb->mac to skb->mac_header, to match the names of the associated helpers
(skb[_[re]set]_{transport,network,mac}_header).

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/llc/llc_input.c b/net/llc/llc_input.c
index b3f65d1..099ed8f 100644
--- a/net/llc/llc_input.c
+++ b/net/llc/llc_input.c
@@ -112,7 +112,7 @@
 	if (unlikely(!pskb_may_pull(skb, llc_len)))
 		return 0;
 
-	skb->h.raw += llc_len;
+	skb->transport_header += llc_len;
 	skb_pull(skb, llc_len);
 	if (skb->protocol == htons(ETH_P_802_2)) {
 		__be16 pdulen = eth_hdr(skb)->h_proto;