[automerger skipped] [RESTRICT AUTOMERGE] Fix clearkey CryptoPlugin use after free vulnerability. am: abb7ad47b0 am: 2e056f1923 -s ours am: 6fc9c6ed98 am: bb15caf7f9

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

Change-Id: Ia308c643333073aa8ce0deea772e139a0098de26