TEST-70 specified its own EXIT handler, which replaced the `cleanup_loopdev` handler, so the loop device was always hanging around once this test was run. Let's use the new `add_at_exit_handler()` stuff to mitigate this.
TEST-70 specified its own EXIT handler, which replaced the `cleanup_loopdev` handler, so the loop device was always hanging around once this test was run. Let's use the new `add_at_exit_handler()` stuff to mitigate this.