Function tf_cleanup_cache_sentinel

tests/test_main.c:162–166

static char tf_home_sentinel[512];

static void tf_cleanup_cache_sentinel(void) {
    if (tf_home_sentinel[0]) {
        th_rmtree(tf_home_sentinel);
    }
}

static bool tf_setup_cache_sentinel(void) {
    snprintf(tf_home_sentinel, sizeof(tf_home_sentinel), "/tmp/cbm-test-home-XXXXXX");