lib-storage: MAIL_FETCH_BODY_SNIPPET should seek the mail stream back to original position.
lib-storage: MAIL_FETCH_BODY_SNIPPET should seek the mail stream back to original position.

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