bntest: make sure file_rshift tests BN_rshift1 as well when appropriate

    BIGNUM *rshift = getBN(s, "RShift");

    BIGNUM *ret = BN_new();

    int n = 0;

    int st = 0;

    int errcnt = 1;

    if (a == NULL || rshift == NULL || ret == NULL || !getint(s, &n, "N"))

        goto err;

    errcnt = 0;

    if (!BN_rshift(ret, a, n)

            || !equalBN("A >> N", rshift, ret))

        goto err;

        errcnt++;

    /* If N == 1, try with rshift1 as well */

    if (n == 1) {

        if (!BN_rshift1(ret, a)

                || !equalBN("A >> 1 (rshift1)", rshift, ret))

            errcnt++;

    }

    st = 1;

err:

    BN_free(a);

    BN_free(rshift);

    BN_free(ret);

    return st;

    return errcnt == 0;

}

static int file_square(STANZA *s)