Fix errorprone warnings that should be errors am: cb215867da

Original change: https://android-review.googlesource.com/c/platform/packages/apps/WallpaperPicker2/+/2254807

Change-Id: I8ee19ecff8555f66134ab6fc222cb12543a61f9a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>