Description of problem:

system-config-users fail to remove user. Probably if mail dir doesn't exist.

Version-Release number of selected component (if applicable):


How reproducible:


Steps to Reproduce:
1. Run system-config-users
2. Create an user
3. Remove it, A new window appears:
4. Select "remove user dir ..."
5. Click on yes. No graphical warning or other appear.
6. Close the window
7. Retry to remove it (and success)
  
Actual results:
Can't remove user.

Expected results:
Be able to remove user on the first try.


Additional info:
On terminal, the following error message:
Traceback (most recent call last):
  File "/usr/share/system-config-users/mainWindow.py", line 710, in on_delete_activate
    self.rmrf(mailSpool)
  File "/usr/share/system-config-users/mainWindow.py", line 890, in rmrf
    raise
TypeError: exceptions must be classes or instances, not NoneType