Instructions after an unconditional jump can be omitted.

BUG=chromium:715582
R=bradnelson@chromium.org,verwaest@chromium.org
TBR=bradnelson@chromium.org

Change-Id: Ie4f4041ed836f328955a0ff396e2dfd6adc01513
Reviewed-on: https://chromium-review.googlesource.com/487983
Commit-Queue: Jochen Eisinger <jochen@chromium.org>
Reviewed-by: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#44923}