[Bf-blender-cvs] [3a14c011f9f] master: GPencil: Fix unreported crash using U key in Draw mode

[Antonio Vazquez]

Commit: 3a14c011f9fb35cf7432f6bc7f96cb18cacc8255
Author: Antonio Vazquez
Date:   Fri May 15 13:05:46 2020 +0200
Branches: master
https://developer.blender.org/rB3a14c011f9fb35cf7432f6bc7f96cb18cacc8255

GPencil: Fix unreported crash using U key in Draw mode

The problem was the preview could be not available when press the key.

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

M	source/blender/editors/gpencil/gpencil_utils.c

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

diff --git a/source/blender/editors/gpencil/gpencil_utils.c b/source/blender/editors/gpencil/gpencil_utils.c
index 03deab15b1e..407571d18c8 100644
--- a/source/blender/editors/gpencil/gpencil_utils.c
+++ b/source/blender/editors/gpencil/gpencil_utils.c
@@ -507,7 +507,7 @@ const EnumPropertyItem *ED_gpencil_material_enum_itemf(bContext *C,
       item_tmp.identifier = ma->id.name + 2;
       item_tmp.name = ma->id.name + 2;
       item_tmp.value = i;
-      item_tmp.icon = ma->preview->icon_id;
+      item_tmp.icon = ma->preview ? ma->preview->icon_id : ICON_NONE;
 
       RNA_enum_item_add(&item, &totitem, &item_tmp);
     }