Don't crash if mailbox named INBOX is listed in prefixless namespace, but which doesn't have inbox=yes. Instead the mailbox is simply not listed.
Don't crash if mailbox named INBOX is listed in prefixless namespace, but
which doesn't have inbox=yes. Instead the mailbox is simply not listed.

LTD-Beget/dovecot,LTD-Beget/dovecot,LTD-Beget/dovecot,LTD-Beget/dovecot,LTD-Beget/dovecot