CCHttpRequest 崩溃

Cocos2d-x
#1 
    CCHttpRequest* request = new CCHttpRequest();  
    request->setUrl("http://www.httpbin.org/post");  
    request->setRequestType(CCHttpRequest::kHttpPost);  
    request->setResponseCallback(this, callfuncND_selector(CGameScene::onGetFinished));  
      
    // write the post data  
    const char* postData = "visitor=cocos2d&TestSuite=Extensions Test/NetworkTest";  
    request->setRequestData(postData, strlen(postData));   
      
    request->setTag("POST test1");  
    CCHttpClient::getInstance()->send(request);  
    request->release();   //这里 调用 release 的时候 有时发生崩溃 ！  在debug版本没事！