Add a default value for component in Bessel1::value.

diff --git a/include/deal.II/base/function_bessel.h b/include/deal.II/base/function_bessel.h
index 275117280b5958d862edd33dd94d917d1a410301..933a942c8506374d7a294d3c470eb2da3acbfcc9 100644 (file)
--- a/include/deal.II/base/function_bessel.h
+++ b/include/deal.II/base/function_bessel.h
@@ -41,7 +41,7 @@ namespace Functions
             const Point<dim>   center = Point<dim>());
     virtual double
     value(const Point<dim> & points,
-          const unsigned int component) const override;
+          const unsigned int component = 0) const override;
     virtual void
     value_list(const std::vector<Point<dim>> &points,
                std::vector<double> &          values,