X509_CRL_get0_lastUpdate
LCRYPTO_ALIAS(X509_CRL_get0_lastUpdate);
LCRYPTO_USED(X509_CRL_get0_lastUpdate);
const ASN1_TIME *X509_CRL_get0_lastUpdate(const X509_CRL *crl);
at = X509_CRL_get0_lastUpdate(crl->x509_crl);