[automerger skipped] [RESTRICT AUTOMERGE] Fix potential decrypt srcPtr ...

[automerger skipped] [RESTRICT AUTOMERGE] Fix potential decrypt srcPtr  overflow. am: a7dd68bd -s ours am: 0a7ff150 am: 8dc98947 -s ours am: 2d476ffe am: 371cf68c -s ours am: 7f79460d am: ac52e929 -s ours

am skip reason: subject contains skip directive

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/13411281

Change-Id: I7d79023fe11a955fbf5e929eae9a94f6e74b84a3