broken gpg support for debian repos

[alfredodeza]

this should never happen:

$ merfi gpg
--> Starting path collection, looking for files to sign
Traceback (most recent call last):
  File "/home/ubuntu/.virtualenvs/merfi/bin/merfi", line 10, in <module>
    execfile(__file__)
  File "/home/ubuntu/python/merfi/bin/merfi", line 6, in <module>
    main.Merfi()
  File "/home/ubuntu/python/merfi/merfi/main.py", line 38, in __init__
    self.main(argv)
  File "/home/ubuntu/python/merfi/merfi/decorators.py", line 45, in newfunc
    return f(*a, **kw)
  File "/home/ubuntu/python/merfi/merfi/main.py", line 60, in main
    parser.dispatch()
  File "/home/ubuntu/.virtualenvs/merfi/local/lib/python2.7/site-packages/tambo-0.2.0-py2.7.egg/tambo/dispatcher.py", line 22, in dispatch
    return instance.parse_args()
  File "/home/ubuntu/python/merfi/merfi/backends/base.py", line 16, in parse_args
    self.sign()
  File "/home/ubuntu/python/merfi/merfi/backends/gpg.py", line 36, in sign
    repo_paths = RepoCollector.debian_release_files(repo)
  File "/home/ubuntu/python/merfi/merfi/collector.py", line 69, in debian_release_files
    root, dirs, files = next(walk(dists))
StopIteration

It also seems like I need to be in a specific directory for this to work, which should never be the case. There is no need to call next either, one can just loop over the iterator here.

[alfredodeza]

Fixed with a8e3214cbd36232d983374927d382472aae69f02