sk_X509_NAME_pop_free
sk_X509_NAME_pop_free(s->s3->hs.tls12.ca_names, X509_NAME_free);
sk_X509_NAME_pop_free(s->s3->hs.tls12.ca_names, X509_NAME_free);
sk_X509_NAME_pop_free(*ca_list, X509_NAME_free);
sk_X509_NAME_pop_free(ret, X509_NAME_free);
sk_X509_NAME_pop_free(ret, X509_NAME_free);
sk_X509_NAME_pop_free(s->s3->hs.tls12.ca_names, X509_NAME_free);
sk_X509_NAME_pop_free(ca_sk, X509_NAME_free);
sk_X509_NAME_pop_free(ctx->client_CA, X509_NAME_free);
sk_X509_NAME_pop_free(s->client_CA, X509_NAME_free);