Fix warning introduced with the latest commit

diff --git a/source/fe/fe_q_hierarchical.cc b/source/fe/fe_q_hierarchical.cc
index 79f85a7a856b5e2a93354810dafa01d6f7f124a6..fa253d66ca62eac7f6a19d8118582acd87ba601d 100644 (file)
--- a/source/fe/fe_q_hierarchical.cc
+++ b/source/fe/fe_q_hierarchical.cc
@@ -150,8 +150,8 @@ FE_Q_Hierarchical<dim>::interpolate(
 template <int dim>
 void
 FE_Q_Hierarchical<dim>::interpolate(
-  std::vector<double> &local_dofs,
-  const VectorSlice<const std::vector<std::vector<double> > > &values) const
+  std::vector<double> &,
+  const VectorSlice<const std::vector<std::vector<double> > > &) const
 {
   Assert (false, ExcNotImplemented());
 }