Forward declare some classes

src/gui/transferlistwidget.h

@@ -33,16 +33,16 @@
 #include <QTreeView>
 #include <QVector>
 
-namespace BitTorrent
-{
-    class TorrentHandle;
-}
-
 class MainWindow;
 class TransferListDelegate;
 class TransferListModel;
 class TransferListSortModel;
 
+namespace BitTorrent
+{
+    class TorrentHandle;
+}
+
 class TransferListWidget : public QTreeView
 {
     Q_OBJECT