Merge "Preventing NPE crash if view is detached from window." into tm-dev am: 76386f47a4

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18799295

Change-Id: I3fd959a42035df57659b70a2693e3a60096d09f7
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>