Call close() in TearDown() am: 25cd9d67d5 am: 9fbde6a00d am: 84f98c0762 am: a63ea8b37a am: d2c39621e8

Original change: https://android-review.googlesource.com/c/platform/hardware/interfaces/+/2254818

Change-Id: Iefa8903f61da91bf225a267d80ecc047aac6179f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>