qla3xxx: bugfix: Add tx control block memset.

This was removed in a previous patch to increase performance, but
caused a transmit error for the 4032 chip.

Signed-off-by: Ron Mercer <ron.mercer@qlogic.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

drivers/net/qla3xxx.c

@@ -2380,6 +2380,7 @@ static int ql3xxx_send(struct sk_buff *skb, struct net_device *ndev)
 	}
 	
 	mac_iocb_ptr = tx_cb->queue_entry;
+	memset((void *)mac_iocb_ptr, 0, sizeof(struct ob_mac_iocb_req));
 	mac_iocb_ptr->opcode = qdev->mac_ob_opcode;
 	mac_iocb_ptr->flags = OB_MAC_IOCB_REQ_X;
 	mac_iocb_ptr->flags |= qdev->mb_bit_mask;