调用回调是这样的，_jsCallback是通过C++接口注册的回调函数，调用cc.sys.cleanScript()后再调用JS_CallFunctionValue会闪退，请问要如何不被回收回调函数
JSContext *cx = ScriptingCore::getInstance()->getGlobalContext();
JS::RootedValue callback(cx, OBJECT_TO_JSVAL(_jsCallback));
if (!callback.isNull()) {
JS::RootedObject global(cx, ScriptingCore::getInstance()->getGlobalObject());
JSAutoCompartment ac(cx, global);
JS::RootedValue retval(cx);
jsval valArr[1];
valArr[0] = INT_TO_JSVAL((int32_t)1);
JS_CallFunctionValue(cx, JS::NullPtr(), callback,JS::HandleValueArray::fromMarkedLocation(1, valArr), &retval);
}