Merge "CCodec: Guard against null output->buffers" into rvc-dev am: 19d5116432 am: f0fd0c8d29 am: 8736f29694

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

Change-Id: Id37d36770ebf829cd7db7d4691e723246522461d