Bug 235533

So, yesterday I fixed bug 235351 in GDM where it would crash if /etc/passwd
contained non-utf8 characters.

Today I went to system-config-users to delete the test user I created yesterday
and a few other test users I had on my laptop and it crashed, too. :-)

The output is:
Traceback (most recent call last):
  File "/usr/share/system-config-users/system-config-users.py", line 46, in <module>
    mainWindow.mainWindow()
  File "/usr/share/system-config-users/mainWindow.py", line 269, in __init__
    self.refresh()
  File "/usr/share/system-config-users/mainWindow.py", line 430, in refresh
    self.populate_lists()
  File "/usr/share/system-config-users/mainWindow.py", line 521, in populate_lists
    self.populate_user_list()
  File "/usr/share/system-config-users/mainWindow.py", line 461, in
populate_user_list
    gecos = unicode (gecos, 'utf-8')
UnicodeDecodeError: 'utf8' codec can't decode bytes in position 2-3: unexpected
end of data

The easiest fix is probably to add a third argument 'replace' to make it add
unicode "i don't know what this" characters instead of throwing an exception.

Or if you were feeling extra motivated you could try converting from some of the
most popular encodings out there and converting to utf8, but that doesn't seem
worth the effort.