message: Add trivial constructor to NCMesh::MeshId.
diff: @@ -169,7 +169,8 @@ public:
  Geometry::Type Geom() const { return Geometry::Type(geom); }
  - MeshId(int index = -1, int element = -1, int local = -1, int geom = -1)
  + MeshId() = default;
  + MeshId(int index, int element, int local, int geom = -1)
  : index(index), element(element), local(local), geom(geom) {}
  };
  