breaks when it isn't in its own status channel

[weaselp]

ERROR 2013-05-26T17:31:46 Uncaught exception:
Traceback (most recent call last):
  File "/usr/lib/pymodules/python2.7/supybot/log.py", line 351, in m
    return f(self, *args, **kwargs)
  File "/usr/lib/pymodules/python2.7/supybot/irclib.py", line 132, in __call__
    method(irc, msg)
  File "/home/weasel/torsten/bot/plugins/GroupStatus/plugin.py", line 117, in doPrivmsg
    if not self._checkAuthed(irc, nick):
  File "/home/weasel/torsten/bot/plugins/GroupStatus/plugin.py", line 108, in _checkAuthed
    if nick in irc.state.channels[c].users: return True
  File "/usr/lib/pymodules/python2.7/supybot/utils/gen.py", line 248, in __getitem__
    return self.data[self.key(k)][1]
KeyError: '#<foo>'
ERROR 2013-05-26T17:31:46 Exception id: 0x27b1c