If mail_index_move_to_memory() was called before index file was opened, we didn't properly mark it as "in-memory".
If mail_index_move_to_memory() was called before index file was opened, we
didn't properly mark it as "in-memory".

Distrotech/dovecot,damoxc/dovecot,damoxc/dovecot,damoxc/dovecot,damoxc/dovecot,Distrotech/dovecot,Distrotech/dovecot,Distrotech/dovecot,Distrotech/dovecot,damoxc/dovecot