Fix NuMediaExtractor::readSampleData buffer Handling am: 84c69bca81 am: c2c615137b

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/av/+/22348680

Change-Id: I8c35b7704efebab5f3f064d2abf4811fa2de52b3
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>