is it right to fix seed?

[hea9549]

in poly.go

func randomPoly(degree int) *Poly {
	coeff := make([]bls.FQ, degree + 1)
	rng := rng.NewUniformGenerator(123123421)
	for i := range coeff {
		fq:= bls.NewFQRepr(uint64(rng.Int64()))
		coeff[i] = bls.FQReprToFQ(fq)
	}
	return &Poly {
		coeff: coeff,
	}
}

you make some code like
rng := rng.NewUniformGenerator(123123421)

but according to the library specification,

rng.NewUniformGenerator(SEED)

poly.go is not test file, so I think it is not right to fix the seed.