Remove extraneous semicolons and fix indentation in a couple of places.

TEST=angle_unittests

Change-Id: Iaa51eb50990c0435f41dfd346ec161216cd8d372
Reviewed-on: https://chromium-review.googlesource.com/261823Tested-by: Olli Etuaho <oetuaho@nvidia.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>