[PATCH py26-fix] branchmap: fix python 2.6 by using util.buffer() instead of passing bytearray

[Yuya Nishihara]

On Sun, 12 Mar 2017 20:15:13 -0400, Augie Fackler wrote:
> # HG changeset patch
> # User Augie Fackler <augie at google.com>
> # Date 1489362471 14400
> #      Sun Mar 12 19:47:51 2017 -0400
> # Node ID df3fd1d493739948ba39c85072a09c5fee06480b
> # Parent  52ee1b5ac277bd5569a8d3e3ae3e11dff0543323
> branchmap: fix python 2.6 by using util.buffer() instead of passing bytearray

Queued, thanks.