A stack trace when running with -1oq

[John Wiegley]

Got this when running offlineimap -1oq:

--8<---------------cut here---------------start------------->8---
Syncing INBOX: IMAP -> MappedIMAP
ERROR [<InstanceLimitedThread(Folder sync [Gmail], started daemon 4428140544)>]: ERROR in syncfolder for Gmail folder INBOX: Traceback (most recent call last):
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/offlineimap/accounts.py", line 321, in syncfolder
    localfolder.cachemessagelist()
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/offlineimap/folder/UIDMaps.py", line 90, in cachemessagelist
    self._mb.cachemessagelist()
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/offlineimap/folder/IMAP.py", line 123, in cachemessagelist
    res_type, imapdata = imapobj.select(self.getfullname(), True)
TypeError: 'NoneType' object is not iterable

  'NoneType' object is not iterable
--8<---------------cut here---------------end--------------->8---

John