bisect-kit: cros_util: fix variable name

BUG=b:185874058
BUG=b:185978505
TEST=manually

Change-Id: I07820a5d9daffbae38f99539d32b651798426d43
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/bisect-kit/+/2896426
Tested-by: Zheng-Jie Chang <zjchang@chromium.org>
Auto-Submit: Zheng-Jie Chang <zjchang@chromium.org>
Reviewed-by: Kuang-che Wu <kcwu@chromium.org>
Commit-Queue: Kuang-che Wu <kcwu@chromium.org>
1 file changed