Merge "Avoid double end on PipTransitionAnimator" into udc-dev am: 839aca67...

Merge "Avoid double end on PipTransitionAnimator" into udc-dev am: 839aca67 am: 2a93920d am: 0d4ffe1b am: 2fdbcbc3

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/23270226



Change-Id: I47e4eeaa2d578b6eabcb4c08ef361896ea24811d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>