Fix errorprone warnings that should be errors am: 0390f75869

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Wifi/+/2254468

Change-Id: Ibf67d8f23118a03b328dbec7f25c3f343d03e4d5
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>