Fix memory leak am: 90f51e0c85 am: 2c81aa30c4 am: fdc8a37027

Original change: https://googleplex-android-review.googlesource.com/c/platform/test/vts-testcase/hal/+/12468983

Change-Id: I9a03b1e60bf853795abb256fa1584d726c4b6d9b