attempt to fix windows build

after commit 924b2923
"V801: Decreased performance"

Change-Id: I32af1195f6e7e1fc4b94487bfbfab669bcad3951

vcl/win/source/gdi/salbmp.cxx

@@ -692,7 +692,7 @@ bool WinSalBitmap::Create( const SalBitmap& rSSalBmp, sal_uInt16 nNewBitCount )
 bool WinSalBitmap::Create( const ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XBitmapCanvas >& xBitmapCanvas, Size& /*rSize*/, bool bMask )
 {
     ::com::sun::star::uno::Reference< ::com::sun::star::beans::XFastPropertySet >
-        xFastPropertySet( rBitmapCanvas, ::com::sun::star::uno::UNO_QUERY );
+        xFastPropertySet( xBitmapCanvas, ::com::sun::star::uno::UNO_QUERY );
 
     if( xFastPropertySet.get() ) {
         ::com::sun::star::uno::Sequence< ::com::sun::star::uno::Any > args;