TB when joining MUC in which we are already active from browse window
repro: join a muc. do a service disco on that conference server. select the muc you are in, and click join:
Traceback (most recent call last):
File "/home/bb/Download/gajim/src/disco.py", line 1531, in on_join_button_clicked
dialogs.JoinGroupchatWindow(self.account, service, room)
File "/home/bb/Download/gajim/src/dialogs.py", line 1045, in __init__
raise RuntimeError, 'You are already in this room'
RuntimeError: You are already in this room