[automerger skipped] [RESTRICT AUTOMERGE] Fix clearkey CryptoPlugin use after free vulnerability. am: abb7ad47b0 am: 2e056f1923 -s ours am: 6fc9c6ed98

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/13499528

Change-Id: I8ad263011c0d5819869ca33ade69f36ac3957a66