message: Move the steps in computing the public input commitment into a block
diff: @@ -488,6 +488,7 @@ where
  }
  //~ 1. Commit to the negated public input polynomial.
  + let public_comm = {
  let lgr_comm = index
  .srs()
  .lagrange_bases
  @@ -507,7 +508,6 @@ where
  }
  let elm: Vec<_> = proof.public.iter().map(|s| -*s).collect();
  let public_comm = PolyComm::<G>::multi_scalar_mul(&com_ref, &elm);
  - let public_comm = {
  index
  .srs()
  .mask_custom(
  