[Bf-blender-cvs] [dd662c74ae9] master: Fix skin mark operator

[Campbell Barton]

Commit: dd662c74ae9533dae02b3e9b01417b71a7f3ff26
Author: Campbell Barton
Date:   Wed Mar 29 19:32:57 2017 +1100
Branches: master
https://developer.blender.org/rBdd662c74ae9533dae02b3e9b01417b71a7f3ff26

Fix skin mark operator

Accessed custom-data layer offset before creating.

===================================================================

M	source/blender/editors/object/object_modifier.c

===================================================================

diff --git a/source/blender/editors/object/object_modifier.c b/source/blender/editors/object/object_modifier.c
index d601f5c3b14..06d306ded42 100644
--- a/source/blender/editors/object/object_modifier.c
+++ b/source/blender/editors/object/object_modifier.c
@@ -1484,7 +1484,6 @@ static int skin_root_mark_exec(bContext *C, wmOperator *UNUSED(op))
 	Object *ob = CTX_data_edit_object(C);
 	BMEditMesh *em = BKE_editmesh_from_object(ob);
 	BMesh *bm = em->bm;
-	const int cd_vert_skin_offset = CustomData_get_offset(&bm->vdata, CD_MVERT_SKIN);
 	BMVert *bm_vert;
 	BMIter bm_iter;
 	GSet *visited;
@@ -1493,6 +1492,8 @@ static int skin_root_mark_exec(bContext *C, wmOperator *UNUSED(op))
 
 	BKE_mesh_ensure_skin_customdata(ob->data);
 
+	const int cd_vert_skin_offset = CustomData_get_offset(&bm->vdata, CD_MVERT_SKIN);
+
 	BM_ITER_MESH (bm_vert, &bm_iter, bm, BM_VERTS_OF_MESH) {
 		if (BM_elem_flag_test(bm_vert, BM_ELEM_SELECT) &&
 		    BLI_gset_add(visited, bm_vert))