Fix double free of play policy in a race condition. am: 4b86f1dbae am: 02dcf3a9c0 am: 23a3c61289

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/13472357

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I899f1cf716585ec23fb72eb8d973cdfc84ac6ef0