[PATCH 3 of 4 v4] tests: change branches test to work cross platform

[Yuya Nishihara]

On Sun, 14 Feb 2016 23:48:27 -0600, timeless wrote:
> # HG changeset patch
> # User timeless <timeless at mozdev.org>
> # Date 1454910985 0
> #      Mon Feb 08 05:56:25 2016 +0000
> # Node ID de492f4be4555250f293171c3ff52566d9e46892
> # Parent  d3f1b7ee5e7091afa7bf8059013ddfb3b385a37c
> tests: change branches test to work cross platform

Queued this, thanks!