audio: Fix the lifetime of the StreamWorker's logic part am: 0b9c5feed1

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2199345

Change-Id: Idcb74d5a6cbbf3fed8d516c28280716fffffccd2
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>