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

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

Change-Id: I98c20caa02acca1b9f374b9a920a21afa1ab4824
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>