lib-storage: Don't crash when trying to sync private index, if syncing had already failed.
lib-storage: Don't crash when trying to sync private index, if syncing had already failed.

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