[NETLINK]: Avoid pointer in netlink_run_queue

I was looking at Patrick's fix to inet_diag and it occured
to me that we're using a pointer argument to return values
unnecessarily in netlink_run_queue.  Changing it to return
the value will allow the compiler to generate better code
since the value won't have to be memory-backed.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/netlink/genetlink.c b/net/netlink/genetlink.c
index af8fe26..07ef5d2 100644
--- a/net/netlink/genetlink.c
+++ b/net/netlink/genetlink.c
@@ -485,7 +485,7 @@
 	do {
 		if (genl_trylock())
 			return;
-		netlink_run_queue(sk, &qlen, genl_rcv_msg);
+		qlen = netlink_run_queue(sk, qlen, genl_rcv_msg);
 		genl_unlock();
 	} while (qlen && genl_sock && genl_sock->sk_receive_queue.qlen);
 }