Fix T84404: Crash when using Skin Resize in mesh without Skin modifier

Caused by rB54ee4109143b

Before that commit `TD_SKIP` was marked for all vertices.

Now skip the whole operation as all vertices are skipped.

1 files changed, 5 insertions, 2 deletions

diff --git a/source/blender/editors/transform/transform_convert_mesh_skin.c b/source/blender/editors/transform/transform_convert_mesh_skin.c
index f2c35bb1048..4c42ed6ca1e 100644
--- a/source/blender/editors/transform/transform_convert_mesh_skin.c
+++ b/source/blender/editors/transform/transform_convert_mesh_skin.c
@@ -52,6 +52,7 @@ static void mesh_skin_transdata_create(TransDataBasic *td, BMEditMesh *em, BMVer
 {
   BLI_assert(BM_elem_flag_test(eve, BM_ELEM_HIDDEN) == 0);
   MVertSkin *vs = CustomData_bmesh_get(&em->bm->vdata, eve->head.data, CD_MVERT_SKIN);
+  td->flag = 0;
   if (vs) {
     copy_v3_v3(td->iloc, vs->radius);
     td->loc = vs->radius;
@@ -60,8 +61,6 @@ static void mesh_skin_transdata_create(TransDataBasic *td, BMEditMesh *em, BMVer
     td->flag |= TD_SKIP;
   }
 
-  td->flag = 0;
-
   if (BM_elem_flag_test(eve, BM_ELEM_SELECT)) {
     td->flag |= TD_SELECTED;
   }
@@ -93,6 +92,10 @@ void createTransMeshSkin(TransInfo *t)
      * transform data is created by selected vertices.
      */
 
+    if (!CustomData_has_layer(&bm->vdata, CD_MVERT_SKIN)) {
+      continue;
+    }
+
     /* Support other objects using PET to adjust these, unless connected is enabled. */
     if ((!prop_mode || (prop_mode & T_PROP_CONNECTED)) && (bm->totvertsel == 0)) {
       continue;