Fix memory leak am: bd48529dba am: f9d86b16c0 am: 336fb0a54c

Original change: https://googleplex-android-review.googlesource.com/c/platform/test/vts-testcase/hal/+/12468980

Change-Id: I5121c73604bfcf6f88e57f7cbd7a8ede91df132f