X509_CRL_get_nextUpdate
if (X509_CRL_get_nextUpdate(x))
X509_CRL_get_nextUpdate(x));
if (X509_CRL_get_nextUpdate(x))
ASN1_TIME_print(out, X509_CRL_get_nextUpdate(x));
if (X509_CRL_get_nextUpdate(crl)) {
i = X509_cmp_time(X509_CRL_get_nextUpdate(crl), ptime);
ASN1_TIME *X509_CRL_get_nextUpdate(X509_CRL *crl);