Merge "AudioFlinger: clean up ctor initialization" into udc-dev-plus-aosp am: 06991649a9

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/24829019

Change-Id: I31399c64ee86675461f018cbd9d70c0bb2a0ae85
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>