general exception in ircchat, UnicodeDecodeError

[Jeff Quast]

  File "x84/bbs/session.py", line 366, in run
    self.runscript(self._script_stack.pop())

  File "x84/bbs/session.py", line 708, in runscript
    value = module.main(*script.args, **script.kwargs)

  File "/usr/local/src/x84/x84/default/main.py", line 252, in main
    gosub(item.script, *item.args, **item.kwargs)

  File "x84/bbs/session.py", line 73, in gosub
    return getsession().runscript(script)

  File "x84/bbs/session.py", line 708, in runscript
    value = module.main(*script.args, **script.kwargs)

  File "/usr/local/src/x84/x84/default/ircchat.py", line 569, in main
    client.reactor.process_once()

  File "/usr/local/lib/python2.7/dist-packages/irc/client.py", line 257, in process_once
    self.process_data(i)

  File "/usr/local/lib/python2.7/dist-packages/irc/client.py", line 214, in process_data
    c.process_data()

  File "/usr/local/lib/python2.7/dist-packages/irc/client.py", line 580, in process_data
    for line in self.buffer:

  File "/usr/local/lib/python2.7/dist-packages/irc/buffer.py", line 96, in lines
    self.handle_exception()

  File "/usr/local/lib/python2.7/dist-packages/irc/buffer.py", line 94, in lines
    yield line.decode(self.encoding, self.errors)

  File "/usr/lib/python2.7/encodings/utf_8.py", line 16, in decode
    return codecs.utf_8_decode(input, errors, True)

UnicodeDecodeError: 'utf8' codec can't decode byte 0xb0 in position 69: invalid start byte


resume main after general exception in ircchat