Sketcher: error message when trying to increase the degree of not-a-bspline fixes #3471
Sketcher: error message when trying to increase the degree of not-a-bspline fixes #3471

Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master