Fix T65809: Blender crash while using the Normal's "merge" option in edit mode.

Merge code will generate temp normal editing data for affected loops,
but since it will later (by setting some edges/faces to smooth) alter
and extend affected clnor spaces, it will also need temp normal editing
data for some other loops around those vertices...

Using those clnor editing data in that code is a bit of an abuse, but on
the other hand that struct stores exactly what we need.

So simply added an option to generate that editing data for all clnors
of affected vertices.

1 files changed, 2 insertions, 1 deletions

diff --git a/source/blender/bmesh/intern/bmesh_mesh.h b/source/blender/bmesh/intern/bmesh_mesh.h
index d0cf50a7894..83575552acc 100644
--- a/source/blender/bmesh/intern/bmesh_mesh.h
+++ b/source/blender/bmesh/intern/bmesh_mesh.h
@@ -67,7 +67,8 @@ void BM_lnorspace_err(BMesh *bm);
 #endif
 
 /* Loop Generics */
-struct BMLoopNorEditDataArray *BM_loop_normal_editdata_array_init(BMesh *bm);
+struct BMLoopNorEditDataArray *BM_loop_normal_editdata_array_init(BMesh *bm,
+                                                                  const bool do_all_loops_of_vert);
 void BM_loop_normal_editdata_array_free(struct BMLoopNorEditDataArray *lnors_ed_arr);
 int BM_total_loop_select(BMesh *bm);