[Bf-blender-cvs] [18cc8809c34] blender2.8: Fix T55457: Crash after merge faces

[Campbell Barton]

Commit: 18cc8809c34468fb748f94f637beebd58ca3b8d4
Author: Campbell Barton
Date:   Tue Jun 12 20:43:46 2018 +0200
Branches: blender2.8
https://developer.blender.org/rB18cc8809c34468fb748f94f637beebd58ca3b8d4

Fix T55457: Crash after merge faces

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

M	source/blender/editors/mesh/editmesh_utils.c

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

diff --git a/source/blender/editors/mesh/editmesh_utils.c b/source/blender/editors/mesh/editmesh_utils.c
index ab44e017fc6..bbc9471638d 100644
--- a/source/blender/editors/mesh/editmesh_utils.c
+++ b/source/blender/editors/mesh/editmesh_utils.c
@@ -172,6 +172,10 @@ bool EDBM_op_finish(BMEditMesh *em, BMOperator *bmop, wmOperator *op, const bool
 			BKE_editmesh_tessface_calc(em);
 		}
 
+		if (em->ob) {
+			DEG_id_tag_update(&((Mesh *)em->ob->data)->id, DEG_TAG_COPY_ON_WRITE);
+		}
+
 		return false;
 	}
 	else {