message: fix typo and deduplicate comment
diff: @@ -443,16 +443,14 @@ pub trait EvalContextExt<'mir, 'tcx: 'mir>: crate::MiriEvalContextExt<'mir, 'tcx
  "assert_uninit_valid" => {
  let ty = substs.type_at(0);
  let layout = this.layout_of(ty)?;
  + // Return here because we panicked instead of returning normally from the intrinsic.
  if layout.abi.is_uninhabited() {
  - // Return here because we paniced instead of returning normally from the intrinsic.
  return this.start_panic(&format!("attempted to instantiate uninhabited type `{}`", ty), unwind);
  }
  if intrinsic_name == "assert_zero_valid" && !layout.might_permit_raw_init(this, /*zero:*/ true).unwrap() {
  - // Return here because we paniced instead of returning normally from the intrinsic.
  return this.start_panic(&format!("attempted to zero-initialize type `{}`, which is invalid", ty), unwind);
  }
  if intrinsic_name == "assert_uninit_valid" && !layout.might_permit_raw_init(this, /*zero:*/ false).unwrap() {
  - // Return here because we paniced instead of returning normally from the intrinsic.
  return this.start_panic(&format!("attempted to leave type `{}` uninitialized, which is invalid", ty), unwind);
  }
  }
  