ossl_cmp_hdr_set1_recipient
if (!ossl_cmp_hdr_set1_recipient(hdr, rcp))
int ossl_cmp_hdr_set1_recipient(OSSL_CMP_PKIHEADER *hdr, const X509_NAME *nm);
if (!TEST_int_eq(ossl_cmp_hdr_set1_recipient(fixture->hdr, x509name), 1))