[ISDN] Add missing label in isdn_common.c

[Herbert Xu]

Hi:

The last change to isdn_common.c removed a label that is used when
ISDN_PPP is defined.  This patch puts it back.

Cheers,
-- 
Debian GNU/Linux 3.0 is out! ( http://www.debian.org/ )
Email:  Herbert Xu ~{PmV>HI~} <herbert@xxxxxxxxxxxxxxxxxxx>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
Index: kernel-source-2.5/drivers/isdn/i4l/isdn_common.c
===================================================================
RCS file: /home/gondolin/herbert/src/CVS/debian/kernel-source-2.5/drivers/isdn/i4l/isdn_common.c,v
retrieving revision 1.1.1.7
diff -u -r1.1.1.7 isdn_common.c
--- kernel-source-2.5/drivers/isdn/i4l/isdn_common.c	28 Sep 2003 04:44:13 -0000	1.1.1.7
+++ kernel-source-2.5/drivers/isdn/i4l/isdn_common.c	28 Sep 2003 10:05:01 -0000
@@ -2229,8 +2229,10 @@
 	isdn_info_update();
 	return 0;
 
-/* err_tty_modem:*/
+#ifdef CONFIG_ISDN_PPP
+ err_tty_modem:
 	isdn_tty_exit();
+#endif
  err_cleanup_devfs:
 	isdn_cleanup_devfs();
 	unregister_chrdev(ISDN_MAJOR, "isdn");