老师，在我们本节（12-9）视频的9：43的如下代码，是不是少了一次delete settingini？我下面用注释做了标记

if (url == NULL) {
if (backGroundpath == NULL) {
delete settingini;
return;
}
else {
m_strBackgroundPath = backGroundpath;
m_strBackgroundChoosePath = backGroundpath;
delete settingini;
emit backGroundChanged(m_strBackgroundPath);
emit backGroundChooseChanged(m_strBackgroundChoosePath);
}
}
else {
if (url != m_strBackgroundPath) {
settingini->setValue(“Path/Background”, url);
m_strBackgroundPath = url;
m_strBackgroundChoosePath = url;
//这里需要delete settingini吧？

		emit backGroundChanged(m_strBackgroundPath);
		emit backGroundChooseChanged(m_strBackgroundChoosePath);
	}
}