fix unix build after ugly workaround r13732

git-svn-id: http://svn.osgeo.org/qgis/trunk@13735 c8812cc2-4d05-0410-92ff-de0c093fc19c

Author: jef

src/app/qgisapp.h

@@ -438,8 +438,10 @@ class QgisApp : public QMainWindow
     //! reimplements widget keyPress event so we can check if cancel was pressed
     virtual void keyPressEvent( QKeyEvent * event );
 
+#ifdef Q_OS_WIN
     //! reimplements context menu event
     virtual void contextMenuEvent( QContextMenuEvent *event );
+#endif
 
   private slots:
     //! About QGis