[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 -s ours am: c1de575a am: 390801a2 -s ours

am skip reason: subject contains skip directive

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

Change-Id: I7c5ffa6621a0b0446b98c3bcd5c8cc5f87c9d2dc