message: fix bug in chunk
diff: @@ -64,6 +64,10 @@ impl<F: Field> ExtendedDensePolynomial<F> for DensePolynomial<F> {
  scale *= zeta_n;
  }
  + while coeffs.last().map_or(false, |c| c.is_zero()) {
  + coeffs.pop();
  + }
  +
  DensePolynomial { coeffs }
  }
  }
  