Fix potential decrypt src pointer overflow. am: c9b5693c am: 42546662 am:...

Fix potential decrypt src pointer overflow. am: c9b5693c am: 42546662 am: e0db28bc am: 68e65826 am: c84661b1 am: e77ccd09 am: 632c6b7f am: b3a1dd77

Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/interfaces/+/13412307

Change-Id: I0463bb0f0ca773a937224f318f8addb5fe4d2465