Merge "Check null taskInfo for occlude transitions" into udc-dev am:...

Merge "Check null taskInfo for occlude transitions" into udc-dev am: 2d319490 am: 1d6cc5d0 am: 78a2b911 am: c5a93418

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23154320



Change-Id: Ied834ef8a3339cf6866f7cdd076b4695b3fe26a0
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>