message: Fix arg header comments
diff: @@ -341,7 +341,7 @@ fn add_arg_comment<'a, 'tcx: 'a>(
  };
  let pass_mode = format!("{:?}", pass_mode);
  fx.add_global_comment(format!(
  - "{msg:5} {local:>3}{local_field:<5} {params:10} {pass_mode:20} {ssa:10} {ty:?}",
  + "{msg:5} {local:>3}{local_field:<5} {params:10} {pass_mode:36} {ssa:10} {ty:?}",
  msg = msg,
  local = format!("{:?}", local),
  local_field = local_field,
  