Merge "VTS: Free allocated buffers" into sc-dev am: 3d8bfc7faf am: cbe04c98e8

Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/interfaces/+/14964376

Change-Id: I5d6b49c44695d5bf3ac61d5dbc587b1cff6893be