Merge "ignore call streaming msgs if the adapter is destroyed/not set" into udc-dev am: 72327684

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22726055



Change-Id: I76a040b8417000c24e0273166a9a3553597772aa
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>