[netdrvr] hso: dev_kfree_skb crash fix

Fixes dev_kfree_skb happening too many times when hso_start_net_device
is called from hso_resume.

Signed-off-by: Denis Joseph Barrow <D.Barow@option.com>
Cc: Jeff Garzik <jgarzik@pobox.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
diff --git a/drivers/net/usb/hso.c b/drivers/net/usb/hso.c
index 1131e10..6e42b5a 100644
--- a/drivers/net/usb/hso.c
+++ b/drivers/net/usb/hso.c
@@ -2613,6 +2613,7 @@
 					"Transmitting lingering data\n");
 				hso_net_start_xmit(hso_net->skb_tx_buf,
 						   hso_net->net);
+				hso_net->skb_tx_buf = NULL;
 			}
 			result = hso_start_net_device(network_table[i]);
 			if (result)