Fix build for SDK on Mac

void android_os_Process_setThreadScheduler(JNIEnv* env, jclass clazz,

                                              jint tid, jint policy, jint pri)

{

#ifdef HAVE_SCHED_SETSCHEDULER

    struct sched_param param;

    param.sched_priority = pri;

    int rc = sched_setscheduler(tid, policy, &param);

    if (rc) {

        signalExceptionForPriorityError(env, errno);

    }

#else

    signalExceptionForPriorityError(env, ENOSYS);

#endif

}

void android_os_Process_setThreadPriority(JNIEnv* env, jobject clazz,