rose: Set the destination address in rose_header

Not setting the destination address is a bug that I suspect causes no
problems today, as only the arp code seems to call dev_hard_header and
the description I have of rose is that it is expected to be used with a
static neigbour table.

I have derived the offset and the length of the rose destination address
from rose_rebuild_header where arp_find calls neigh_ha_snapshot to set
the destination address.

Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-hams@vger.kernel.org
Signed-off-by: N"Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/rose/rose_dev.c

@@ -41,6 +41,9 @@ static int rose_header(struct sk_buff *skb, struct net_device *dev,
 {
 	unsigned char *buff = skb_push(skb, ROSE_MIN_LEN + 2);
 
+	if (daddr)
+		memcpy(buff + 7, daddr, dev->addr_len);
+
 	*buff++ = ROSE_GFI | ROSE_Q_BIT;
 	*buff++ = 0x00;
 	*buff++ = ROSE_DATA;