BUG: numbering on lagrangian files was not uptodate with field vtk files

If no particles are in cloud it does not get written. Hence it would also
not output a vtk file. Changed now to always output lagrangian data.

applications/utilities/postProcessing/dataConversion/foamToVTK/lagrangianWriter.H

@@ -81,7 +81,8 @@ public:
             const vtkMesh&,
             const bool binary,
             const fileName&,
-            const word&
+            const word&,
+            const bool dummyCloud
         );