Call close() in TearDown() am: 25cd9d67d5

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

Change-Id: I9cc41bc3989788511d799ddaa6cf9b881f11c980
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>