Merge "Handle null buffer when calling Transaction::setBuffer" into tm-dev am: 297bc93384 am: 0be6f2664b

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

Change-Id: I9f152c38955c317be29056383f82bda0713871fb
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>