OpenSSL::X509::CRL#add_extension

static VALUE
ossl_x509crl_add_extension(VALUE self, VALUE extension)
{
    X509_CRL *crl;
    X509_EXTENSION *ext;

    GetX509CRL(self, crl);
    ext = GetX509ExtPtr(extension);
    if (!X509_CRL_add_ext(crl, ext, -1)) {
        ossl_raise(eX509CRLError, NULL);
    }

    return extension;
}