[UDP]: Replace struct net on udp_iter_state with seq_net_private.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/udp.h b/include/net/udp.h
index 635940d..77af7d4 100644
--- a/include/net/udp.h
+++ b/include/net/udp.h
@@ -194,7 +194,7 @@
 };
 
 struct udp_iter_state {
-	struct net              *net;
+	struct seq_net_private  p;
 	sa_family_t		family;
 	struct hlist_head	*hashtable;
 	int			bucket;