Makes a debug msg more explicit

modules/gui/qt4/components/interface_widgets.cpp

@@ -509,7 +509,7 @@ void ControlsWidget::stop()
 void ControlsWidget::play()
 {
     if( THEPL )
-        msg_Dbg( p_intf, "Nothing to play yet, open a file %i", THEPL->items.i_size );
+        msg_Dbg( p_intf, "There is %i playlist items", THEPL->items.i_size ); /* FIXME: remove me */
     if( playlist_IsEmpty( THEPL ) )
     {
         /* The playlist is empty, open a file requester */