[PATCH] metadataonlyctx: replace "changeset()[0]" to "manifestnode()"

[Yuya Nishihara]

On Fri, 7 Apr 2017 11:10:30 -0700, Jun Wu wrote:
> # HG changeset patch
> # User Jun Wu <quark at fb.com>
> # Date 1491588163 25200
> #      Fri Apr 07 11:02:43 2017 -0700
> # Node ID 0d57661098e3f93e7d1ab4e206d87d39c6ce4f84
> # Parent  c39e7c4b535c654d5b2f7790efebff2909986a04
> # Available At https://bitbucket.org/quark-zju/hg-draft
> #              hg pull https://bitbucket.org/quark-zju/hg-draft -r 0d57661098e3
> metadataonlyctx: replace "changeset()[0]" to "manifestnode()"

Queued, thanks.

I hesitated to change that in flight since metadataonlyctx appeared not
covered by tests. ;)