Bug 981076

Description of problem:
I wrongly downloaded Fedora-Live-KDE-x86_64-19-1.iso to upgrade my Fedora 18 to 19 and got the following error when run fedup-cli command:

$ sudo fedup-cli -v --debuglog $HOME/fedupcli.log --iso /home/murilo/Downloads/Fedora-Live-KDE-x86_64-19-1.iso 
fedup INFO: /bin/fedup-cli starting at Wed Jul  3 20:47:39 2013
setting up repos...
fedup.yum INFO: FedupDownloader(version=None, cachedir=/var/tmp/fedora-upgrade)
fedup.yum INFO: checking repos
fedup.yum INFO: can't find valid repo metadata for fedupiso
Error: can't get boot images.
The 'fedupiso' repo was rejected by yum as invalid.
The given ISO probably isn't an install DVD image.
fedup INFO: /bin/fedup-cli exiting at Wed Jul  3 20:47:39 2013

Then I realized the ISO image was left mounted on the system:

$ mount
/home/murilo/Downloads/Fedora-Live-KDE-x86_64-19-1.iso on /tmp/fedup.mnt.dsfp0D type iso9660 (ro,relatime)

Version-Release number of selected component (if applicable):
fedup-0.7.3-4.fc18.noarch

How reproducible:
Always

Steps to Reproduce:
1. Issue the fedup-cli command with an ordinary ISO image but an install Fedora DVD image. For example:

$ sudo fedup-cli -v --debuglog $HOME/fedupcli.log --iso /home/murilo/Downloads/Fedora-Live-KDE-x86_64-19-1.iso

Actual results:
An error message is shown and the ISO image is left mounted.

Expected results:
ISO image should be umounted before fedup-cli terminates and mount point should be removed from the system.

Additional info: