Merge "Handle null buffer when calling Transaction::setBuffer" into tm-dev am: 297bc933 am: b016cb44 am: ec22e04a am: bf9db43e

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/native/+/18501030



Change-Id: I0ec55c26a930b1e54164fd52724511c7af037752
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>