[Bf-blender-cvs] [bb3d999571a] blender2.8: Fix T57190: loopcut crash w/o overlays

[Campbell Barton]

Commit: bb3d999571ac30f293ff172cac7dcf8b9f4a77fb
Author: Campbell Barton
Date:   Tue Oct 23 15:16:49 2018 +1100
Branches: blender2.8
https://developer.blender.org/rBbb3d999571ac30f293ff172cac7dcf8b9f4a77fb

Fix T57190: loopcut crash w/o overlays

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

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

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

diff --git a/source/blender/editors/mesh/editmesh_loopcut.c b/source/blender/editors/mesh/editmesh_loopcut.c
index 1ca3549090f..b69609a9fa8 100644
--- a/source/blender/editors/mesh/editmesh_loopcut.c
+++ b/source/blender/editors/mesh/editmesh_loopcut.c
@@ -454,7 +454,7 @@ static int ringcut_invoke(bContext *C, wmOperator *op, const wmEvent *event)
 		ARegion *ar = CTX_wm_region(C);
 		wmGizmoMap *gzmap = ar->gizmo_map;
 		wmGizmoGroup *gzgroup = gzmap ? WM_gizmomap_group_find(gzmap, "VIEW3D_GGT_mesh_preselect_edgering") : NULL;
-		if (gzgroup != NULL) {
+		if ((gzgroup != NULL) && gzgroup->gizmos.first) {
 			wmGizmo *gz = gzgroup->gizmos.first;
 			const int object_index = RNA_int_get(gz->ptr, "object_index");
 			const int edge_index = RNA_int_get(gz->ptr, "edge_index");