Fix a bug with music search that didn't show the item's parent when it's being searched for

src/courtroom.cpp

@@ -1211,6 +1211,8 @@ void Courtroom::list_music()
     QList<QTreeWidgetItem*> clist = ui_music_list->findItems(ui_music_search->text(), Qt::MatchContains|Qt::MatchRecursive, 0);
     foreach(QTreeWidgetItem* item, clist)
     {
+      if (item->parent() != nullptr) //So the category shows up too
+        item->parent()->setHidden(false);
       item->setHidden(false);
     }
     ui_music_list->expandAll();