Fix errorprone warnings that should be errors am: f4521a3e14 am: 71299e7af9 am: 0a1bffd725

Original change: https://android-review.googlesource.com/c/platform/external/turbine/+/2254825

Change-Id: I5edf17bf04a20b568703b8dd024ed0e14ff95ede
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>