Avoid a warning about an unused variable.

diff --git a/include/deal.II/matrix_free/matrix_free.templates.h b/include/deal.II/matrix_free/matrix_free.templates.h
index 3d744688b9cb21a2735d3ef55d9151c9386a0ab0..04a41b45c94ab36e7d59a577e73776061a8c957d 100644 (file)
--- a/include/deal.II/matrix_free/matrix_free.templates.h
+++ b/include/deal.II/matrix_free/matrix_free.templates.h
@@ -1794,6 +1794,7 @@ MatrixFree<dim, Number, VectorizedArrayType>::initialize_indices(
                            const unsigned int v,
                            const bool         ext,
                            const bool         flag) {
+                    (void)v;
                     Assert(
                       face_info.faces[f].cells_interior[v] <
                         n_macro_cells_before *