Function subprocess_test_pause

tests/test_subprocess.c:251–254

#ifndef _WIN32

static void subprocess_test_pause(void) {
    const struct timespec delay = {0, 10000000L}; /* 10 ms */
    (void)cbm_nanosleep(&delay, NULL);
}

static bool poll_until_terminal(cbm_subprocess_t *process, int timeout_ms, cbm_proc_result_t *out) {
    uint64_t deadline = cbm_now_ms() + (uint64_t)timeout_ms;