If syncing failed when closing mailbox, we didn't return error as we should have.
If syncing failed when closing mailbox, we didn't return error as we should
have.

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