Fix: Resolve deprecation warning when copying polygon struct

`MPoly` is used and copied in many places. To avoid the need to use a
special function for copying MPoly, or the need to add a copy
constructor, just rename the `mat_nr` field to include "legacy" in the
name. This keeps the original purpose of notifying developers that
the field shouldn't be used without any further complexity.
Apply the same fix to `bweight`.

Differential Revision: https://developer.blender.org/D15841

1 files changed, 2 insertions, 2 deletions

diff --git a/source/blender/blenkernel/intern/mesh.cc b/source/blender/blenkernel/intern/mesh.cc
index 8616b056d7f..6bf25da5ae7 100644
--- a/source/blender/blenkernel/intern/mesh.cc
+++ b/source/blender/blenkernel/intern/mesh.cc
@@ -1612,14 +1612,14 @@ void BKE_mesh_do_versions_cd_flag_init(Mesh *mesh)
   const Span<MEdge> edges = mesh->edges();
 
   for (const MVert &vert : verts) {
-    if (vert.bweight != 0) {
+    if (vert.bweight_legacy != 0) {
       mesh->cd_flag |= ME_CDFLAG_VERT_BWEIGHT;
       break;
     }
   }
 
   for (const MEdge &edge : edges) {
-    if (edge.bweight != 0) {
+    if (edge.bweight_legacy != 0) {
       mesh->cd_flag |= ME_CDFLAG_EDGE_BWEIGHT;
       if (mesh->cd_flag & ME_CDFLAG_EDGE_CREASE) {
         break;