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

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

Change-Id: If7d2d93058a4f567068c533d05e1289270fb6eb7
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>