Fixed infinite looping when parsing some (not all) broken multipart mails that didn't end with proper --boundary--.
Fixed infinite looping when parsing some (not all) broken multipart mails
that didn't end with proper --boundary--.

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