rem: EntryMap::ConstIterator it = entries.begin(); if (it == entries.end())
add: AlarmListViewItem* item = firstChild(); if (!item)
context: int AlarmListView::itemHeight(){	EntryMap::ConstIterator it = entries.begin();	if (it == entries.end())	{		// The list is empty, so create a temporary item to find its height		QListViewItem* item = new QListViewItem(this, QString::null);		int height = item->height();		delete item;		return height;	}	else		return it.key()->height();}