fix for pip3

libs/qt/qcd_model.cpp

@@ -402,7 +402,7 @@ void CDItemModel::buildItem(CDItem * it, CDSection & r) {
 	auto j = r.s.makeIterator();
 	while (j.next()) {
 		it->childs << new CDItem(interface, j.key(), CDItem::ItemCDSection, it);
-		buildItem(it->childs.back(), j.valueRef());
+		buildItem(it->childs.back(), j.value());
 	}
 }