update email address

pavel@suse.cz no longer works, replace it with working address.

Signed-off-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index 218d091..16c3c86 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -4,7 +4,7 @@
  * Note that you can not swap over this thing, yet. Seems to work but
  * deadlocks sometimes - you can not swap over TCP in general.
  * 
- * Copyright 1997-2000, 2008 Pavel Machek <pavel@suse.cz>
+ * Copyright 1997-2000, 2008 Pavel Machek <pavel@ucw.cz>
  * Parts copyright 2001 Steven Whitehouse <steve@chygwyn.com>
  *
  * This file is released under GPLv2 or later.