[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: 0f9aa4d2 -s ours am: 69124fa3 am: 8ee56a73 -s ours am: 428e9ede -s ours

am skip reason: subject contains skip directive

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

Change-Id: I1d68f8bffaf0e82967ba63a05deec73004ea5688