Address additional style nits in cros_generate_update_payload.

BUG=chromium:353558
TEST=Local payload generation trybot on stumpy-full.

Change-Id: Id8ad1e575b1393611a11e44e11e4e9cecec3c080
Reviewed-on: https://chromium-review.googlesource.com/191748
Reviewed-by: Don Garrett <dgarrett@chromium.org>
Commit-Queue: Don Garrett <dgarrett@chromium.org>
Tested-by: Don Garrett <dgarrett@chromium.org>
1 file changed