Don't mark the transaction log corrupted if some record inside it was broken. Changed the error message as well.
Don't mark the transaction log corrupted if some record inside it was
broken. Changed the error message as well.

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