Merge "Guard against null input device in StylusDeviceUpdater" into udc-dev...

Merge "Guard against null input device in StylusDeviceUpdater" into udc-dev am: e78b1f37 am: 3f449e0c

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Settings/+/22894945



Change-Id: Ieec3b8affc3f6f1226aacf214a458ea5cd2ec48c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>