Release the led which has the `-adjust-priority` flag

change logs:
infra/infra: https://chromium.googlesource.com/infra/infra/+log/bf50da1e..c7e0fe5a
luci-go: https://chromium.googlesource.com/infra/luci/luci-go/+log/5c64c54..26c1d75b

Bug: 1138533
Change-Id: Idd19d44f375143db0f5e7bf256b7b32567e8b393
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/2872927Reviewed-by: Robbie Iannucci <iannucci@chromium.org>
Commit-Queue: Yuanjun Huang <yuanjunh@google.com>