Description of problem:

running "dnf grouplist" fails:
NameError: global name 'patterns' is not defined

Version-Release number of selected component (if applicable):
dnf-0.4.5-1.fc20.noarch

How reproducible:
always

Steps to Reproduce:
1.dnf grouplist
2.
3.

Actual results:
Setting up Group Process
Traceback (most recent call last):
  File "/usr/bin/dnf", line 35, in <module>
    main.user_main(sys.argv[1:], exit_code=True)
  File "/usr/lib/python2.7/site-packages/dnf/cli/main.py", line 272, in user_main
    errcode = main(args)
  File "/usr/lib/python2.7/site-packages/dnf/cli/main.py", line 64, in main
    return _main(base, args)
  File "/usr/lib/python2.7/site-packages/dnf/cli/main.py", line 133, in _main
    result, resultmsgs = cli.run()
  File "/usr/lib/python2.7/site-packages/dnf/cli/cli.py", line 1305, in run
    return self.command.doCommand(self.base.basecmd, self.base.extcmds)
  File "/usr/lib/python2.7/site-packages/dnf/cli/commands.py", line 873, in doCommand
    return self.base.returnGroupSummary(extcmds)
  File "/usr/lib/python2.7/site-packages/dnf/cli/cli.py", line 832, in returnGroupSummary
    installed, available = self.group_lists(uservisible, patterns)
NameError: global name 'patterns' is not defined


Expected results:
grouplist is shown

Additional info: