warning C4373: 'chart::ChartModel::setWindow': virtual function overrides...

...'com::sun::star::chart2::X3DChartWindowProvider::setWindow', previous
versions of the compiler did not override when parameters only differed by
const/volatile qualifiers.

X3DChartWindowProvider.hdl defines it as:

virtual void SAL_CALL setWindow( ::sal_uInt64 window )

Change-Id: Ie1b9f940f54df8901c74402a3baf475a0165c5a2

chart2/inc/ChartModel.hxx

@@ -581,7 +581,7 @@ public:
         throw (::com::sun::star::uno::RuntimeException, std::exception) SAL_OVERRIDE;
 
     // X3DChartWindowProvider
-    virtual void SAL_CALL setWindow( const sal_uInt64 nWindowPtr )
+    virtual void SAL_CALL setWindow( sal_uInt64 nWindowPtr )
         throw (::com::sun::star::uno::RuntimeException, std::exception) SAL_OVERRIDE;
 
     virtual void SAL_CALL update()