Fix email address

Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk>
diff --git a/squashfs-tools/mksquashfs.h b/squashfs-tools/mksquashfs.h
index 9ee3661..c9c6e68 100644
--- a/squashfs-tools/mksquashfs.h
+++ b/squashfs-tools/mksquashfs.h
@@ -4,8 +4,8 @@
  * Squashfs
  *
  * Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
- * 2012
- * Phillip Lougher <phillip@lougher.demon.co.uK>
+ * 2012, 2013
+ * Phillip Lougher <phillip@squashfs.org.uk>
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License