[PATCH 3 of 3] chg: check type read from S channel

[Sean Farley]

Jun Wu <quark at fb.com> writes:

> # HG changeset patch
> # User Jun Wu <quark at fb.com>
> # Date 1483719292 0
> #      Fri Jan 06 16:14:52 2017 +0000
> # Node ID 779b9e867ff7f6e0c0b12e700195dff97408a16d
> # Parent  703fee4099efac592f6ae1c48bfebf806dfd95bf
> # Available At https://bitbucket.org/quark-zju/hg-draft
> #              hg pull https://bitbucket.org/quark-zju/hg-draft -r 779b9e867ff7
> chg: check type read from S channel
>
> The previous patch added the check server-side. This patch added it
> client-side.

This seems like a good and fairly straight-forward refactor to me.
Thanks!