[PATCH] IMAP.cachemessagelist(): Protect against empty folders

[John Wiegley]

>>>>> Sebastian Spaeth <Sebastian at SSpaeth.de> writes:

> When invoked with FETCH 1:* (UID), imaplib returns [None] for empty
> folders. We need to protect against this case and simply 'continue' here.

Thanks, that's fixed it.

John