fix maybe-unused warning

``` ./include/deal.II/grid/reference_cell.h:2799:22: warning: ‘face1_vertices.std::array<unsigned[763/12022] M_elems[0]’ may be used uninitialized in this function [-Wmaybe-uninitialized] ./source/grid/grid_tools_dof_handlers.cc:2438:7: note: ‘face1_vertices.std::array<unsigned int, 1>::_M_elems[0]’ was declared here ```
dealii · Apr 7, 2024 · 6b3f89e · 6b3f89e
1 parent 3f9f0fa
commit 6b3f89e
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/source/grid/grid_tools_dof_handlers.cc b/source/grid/grid_tools_dof_handlers.cc
@@ -2435,7 +2435,7 @@ namespace GridTools
     // Do a full matching of the face vertices:
 
     std::array<unsigned int, GeometryInfo<dim>::vertices_per_face>
-      face1_vertices, face2_vertices;
+      face1_vertices{}, face2_vertices;
 
     AssertDimension(face1->n_vertices(), face2->n_vertices());