message: Removal of default destructors.
diff: @@ -68,7 +68,6 @@ namespace RINGMesh {
  struct ElementLocalVertex {
  ElementLocalVertex() = default;
  - ~ElementLocalVertex() = default;
  ElementLocalVertex( index_t element_id, index_t local_vertex_id )
  : element_id_( element_id ), local_vertex_id_( local_vertex_id )
  {
  @@ -82,7 +81,6 @@ namespace RINGMesh {
  struct EdgeLocalVertex {
  EdgeLocalVertex() = default;
  - ~EdgeLocalVertex() = default;
  EdgeLocalVertex( index_t edge_id, index_t local_vertex_id )
  : edge_id_( edge_id ), local_vertex_id_( local_vertex_id )
  {
  @@ -99,7 +97,6 @@ namespace RINGMesh {
  struct PolygonLocalEdge {
  PolygonLocalEdge() = default;
  - ~PolygonLocalEdge() = default;
  PolygonLocalEdge( index_t polygon_id, index_t local_edge_id )
  : polygon_id_( polygon_id ), local_edge_id_( local_edge_id )
  {
  @@ -116,7 +113,6 @@ namespace RINGMesh {
  struct CellLocalFacet {
  CellLocalFacet() = default;
  - ~CellLocalFacet() = default;
  CellLocalFacet( index_t cell_id, index_t local_facet_id )
  : cell_id_( cell_id ), local_facet_id_( local_facet_id )
  {
  