[NET]: cleanup 3rd argument in netlink_sendskb

netlink_sendskb does not use third argument. Clean it and save a couple of
bytes.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Acked-by: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>

include/linux/netlink.h

@@ -194,7 +194,7 @@ struct sock *netlink_getsockbyfilp(struct file *filp);
 int netlink_attachskb(struct sock *sk, struct sk_buff *skb, int nonblock,
 		long timeo, struct sock *ssk);
 void netlink_detachskb(struct sock *sk, struct sk_buff *skb);
-int netlink_sendskb(struct sock *sk, struct sk_buff *skb, int protocol);
+int netlink_sendskb(struct sock *sk, struct sk_buff *skb);
 
 /*
  *	skb should fit one page. This choice is good for headerless malloc.

ipc/mqueue.c

@@ -521,8 +521,7 @@ static void __do_notify(struct mqueue_inode_info *info)
 			break;
 		case SIGEV_THREAD:
 			set_cookie(info->notify_cookie, NOTIFY_WOKENUP);
-			netlink_sendskb(info->notify_sock,
-					info->notify_cookie, 0);
+			netlink_sendskb(info->notify_sock, info->notify_cookie);
 			break;
 		}
 		/* after notification unregisters process */
@@ -568,7 +567,7 @@ static void remove_notification(struct mqueue_inode_info *info)
 	if (info->notify_owner != NULL &&
 	    info->notify.sigev_notify == SIGEV_THREAD) {
 		set_cookie(info->notify_cookie, NOTIFY_REMOVED);
-		netlink_sendskb(info->notify_sock, info->notify_cookie, 0);
+		netlink_sendskb(info->notify_sock, info->notify_cookie);
 	}
 	put_pid(info->notify_owner);
 	info->notify_owner = NULL;

net/netlink/af_netlink.c

@@ -791,7 +791,7 @@ int netlink_attachskb(struct sock *sk, struct sk_buff *skb, int nonblock,
 	return 0;
 }
 
-int netlink_sendskb(struct sock *sk, struct sk_buff *skb, int protocol)
+int netlink_sendskb(struct sock *sk, struct sk_buff *skb)
 {
 	int len = skb->len;
 
@@ -853,7 +853,7 @@ retry:
 	if (err)
 		return err;
 
-	return netlink_sendskb(sk, skb, ssk->sk_protocol);
+	return netlink_sendskb(sk, skb);
 }
 
 int netlink_has_listeners(struct sock *sk, unsigned int group)