CMS_get1_ReceiptRequest
rv = CMS_get1_ReceiptRequest(si, &rr);
if (CMS_get1_ReceiptRequest(osi, &rr) <= 0) {
if (CMS_get1_ReceiptRequest(si, &rr) <= 0) {
int CMS_get1_ReceiptRequest(CMS_SignerInfo *si, CMS_ReceiptRequest **prr);