[Bf-blender-cvs] [98af74b9366] master: Fix T62297: Grease Pencil dots drawing crashes Blender

[Antonioya]

Commit: 98af74b9366b0e1006333fe9e493f3ea50ac952a
Author: Antonioya
Date:   Fri Mar 15 10:07:18 2019 +0100
Branches: master
https://developer.blender.org/rB98af74b9366b0e1006333fe9e493f3ea50ac952a

Fix T62297: Grease Pencil dots drawing crashes Blender

Fix again this bug. Maybe it was introduced when change how wireframe mode by 
object works.

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

M       source/blender/draw/engines/gpencil/gpencil_draw_utils.c

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

diff --git a/source/blender/draw/engines/gpencil/gpencil_draw_utils.c 
b/source/blender/draw/engines/gpencil/gpencil_draw_utils.c
index ce01044a885..a50b4fac15c 100644
--- a/source/blender/draw/engines/gpencil/gpencil_draw_utils.c
+++ b/source/blender/draw/engines/gpencil/gpencil_draw_utils.c
@@ -685,7 +685,7 @@ static DRWShadingGroup *DRW_gpencil_shgroup_point_create(
                        DRW_shgroup_uniform_float(grp, "pixfactor", 
&stl->storage->pixfactor, 1);
                }
                /* viewport x-ray */
-               stl->shgroups[id].is_xray = (ob->dt == OB_WIRE) ? 1 : 
stl->storage->is_xray;
+               stl->shgroups[id].is_xray = ((ob) && (ob->dt == OB_WIRE)) ? 1 : 
stl->storage->is_xray;
                DRW_shgroup_uniform_int(grp, "viewport_xray", (const int 
*)&stl->shgroups[id].is_xray, 1);
                DRW_shgroup_uniform_int(grp, "shading_type", (const int 
*)&stl->storage->shade_render, 2);
        }

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