Merge "codec2: BufferPoolClient: fix NPE in fetchBufferHandle if connection is null" into main am: c818adc8d4 am: 8b0e74abf9

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/3222209

Change-Id: I36d05354dd800496431a8a4de220f377760ad148
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>