xfree (keys);
free_recipients (keys);
op_encrypt_start (const char *inbuf, char **outbuf){    gpgme_key_t *keys = NULL;    int opts = 0;    int err;    recipient_dialog_box (&keys, &opts);    err = op_encrypt ((void *)keys, inbuf, outbuf);    xfree (keys);    return err;}