[ISDN]: Fix compile with CONFIG_ISDN_X25 disabled.

On Mon, Oct 15, 2007 at 06:44:56PM +0400, Denis V. Lunev wrote:
Compilation fix. The problem appears after
7c076d1de869256848dacb8de0050a3a390f95df by Karsten Keil <kkeil@suse.de>
Acked-by: Karsten Keil <kkeil@suse.de>
Signed-off-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/isdn/i4l/isdn_net.c

@@ -2713,7 +2713,7 @@ isdn_net_setcfg(isdn_net_ioctl_cfg * cfg)
 		case ISDN_NET_ENCAP_X25IFACE:
 #ifndef CONFIG_ISDN_X25
 			printk(KERN_WARNING "%s: isdn-x25 support not configured\n",
-			       p->local->name);
+			       p->dev->name);
 			return -EINVAL;
 #else
 			p->dev->type = ARPHRD_X25;	/* change ARP type */