log_debug (LOGFILE, "check_encrypt_result\r\n");
check_encrypt_result (gpgme_ctx_t ctx, gpgme_error_t err){    gpgme_encrypt_result_t res;    res = gpgme_op_encrypt_result (ctx);    log_debug (LOGFILE, "check_encrypt_result\r\n");    if (!res)	return err;    log_debug (LOGFILE, "inv_recips=%p\r\n", res->invalid_recipients);    if (res->invalid_recipients != NULL)	return gpg_error (GPG_ERR_UNUSABLE_PUBKEY);    /* XXX: we need to do more here! */    return err;}