OSError duplicated in foreach when repo hasnt been updated

[jayvdb]

If a repository hasnt been fetched/updated, foreach will result in two (or three) error reports that say the same thing.

ERROR [vcstools] Command failed with OSError. 'git foo' <True, /path/to/missing/repo>:
[Errno 2] No such file or directory: '/path/to/missing/repo'[/vcstools]
....
Error processing 'local-name' : u"Command failed with OSError. 'git foo' <True, /path/to/missing/repo>:\n[Errno 2] No such file or directory: '/path/to/missing/repo'"

[tkruse]

Can you give a more complete example with the command?

Probably not severe enough as a bug/improvement to implement a PR, but if anyone touches the code, might as well look into this.

[dirk-thomas]

Closing since the repository is about to be archived: see #154.