Initialize ret

Without this debug builds will fail.

BUG=none
TEST=USE=debug emerge-sarien depthcharge libpayload chromeos-bootimage
BRANCH=none

Change-Id: Iff182a116e89a8144a2102b288ea87fa75ff8885
Signed-off-by: Mathew King <mathewk@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1553920
Reviewed-by: Raul E Rangel <rrangel@chromium.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
1 file changed