qt4: save and restore the position of the GotoTime dialog

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>
(cherry picked from commit 1d6ed61e)
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

modules/gui/qt4/dialogs/gototime.cpp

@@ -74,10 +74,13 @@ GotoTimeDialog::GotoTimeDialog( intf_thread_t *_p_intf)
     BUTTONACT( gotoButton, close() );
     BUTTONACT( cancelButton, cancel() );
     BUTTONACT( resetButton, reset() );
+
+    QVLCTools::restoreWidgetPosition( p_intf, "gototimedialog", this );
 }
 
 GotoTimeDialog::~GotoTimeDialog()
 {
+    QVLCTools::saveWidgetPosition( p_intf, "gototimedialog", this );
 }
 
 void GotoTimeDialog::toggleVisible()