Merge "Fixes blank lock screen wallpaper after change wp from home to both"...

Merge "Fixes blank lock screen wallpaper after change wp from home to both" into udc-dev am: 2d7c7aa6

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22907819



Change-Id: Ie8539c8505fd8d508d9f7547186f9166e437a3e9
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>