Too late check in af_packet.c

[Dave Jones <davej@xxxxxxxxxx>]

Using the automated source checker at coverity.com, they picked up
on some code in packet_release() where a NULL check was done
after dereferencing.  Patch below.

Signed-off-by: Dave Jones <davej@xxxxxxxxxx>

                Dave

--- linux-2.6.8/net/packet/af_packet.c~ 2004-09-03 21:48:14.653433072 +0100
+++ linux-2.6.8/net/packet/af_packet.c  2004-09-03 21:49:23.652943552 +0100
@@ -785,11 +785,13 @@
 static int packet_release(struct socket *sock)
 {
        struct sock *sk = sock->sk;
-       struct packet_opt *po = pkt_sk(sk);
+       struct packet_opt *po;
 
        if (!sk)
                return 0;
 
+       po = pkt_sk(sk);
+
        write_lock_bh(&packet_sklist_lock);
        sk_del_node_init(sk);
        write_unlock_bh(&packet_sklist_lock);