wgwoods/fedup — pull request #7 by mopsfelder (2013-07-04 19:35:47+00:00)
Title: Umount ISO image before raising SystemExit(1)

When ISO file is not the required DVD install, we should umount the mount point
before raising the exception.

Fix bug https://bugzilla.redhat.com/show_bug.cgi?id=981076