Merge "CCodec: Guard against null output->buffers" into rvc-dev am: 19d51164 am: f0fd0c8d

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/11850304

Change-Id: Ib2d66958892f91c386054c1fefc3a3482b8ac5e8