fixed missing virtual method

git-svn-id: https://lmms.svn.sf.net/svnroot/lmms/trunk/lmms@1466 0778d3d1-df1d-0410-868b-ea421aaaa00d

include/midi_winmm.h

@@ -113,6 +113,10 @@ public:
 		setupWidget( QWidget * _parent );
 		virtual ~setupWidget();
 
+		virtual void saveSettings( void )
+		{
+		}
+
 	} ;