From 8bead3df2ffef1fa249b8c852b03cfcca2400c3d Mon Sep 17 00:00:00 2001
From: Sebastian Parborg <darkdefende@gmail.com>
Date: Wed, 9 Sep 2020 16:03:19 +0200
Subject: [PATCH] Fix material null pointer reference in buttons_context.c

ASAN reported null pointer access when converting a mesh to curves.
Check if the material is a null pointer before trying to use it.
---
 source/blender/editors/space_buttons/buttons_context.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/source/blender/editors/space_buttons/buttons_context.c b/source/blender/editors/space_buttons/buttons_context.c
index e567b3ca54c..2cfda8644df 100644
--- a/source/blender/editors/space_buttons/buttons_context.c
+++ b/source/blender/editors/space_buttons/buttons_context.c
@@ -333,6 +333,9 @@ static bool buttons_context_path_material(ButsContextPath *path)
 
     if (ob && OB_TYPE_SUPPORT_MATERIAL(ob->type)) {
       ma = BKE_object_material_get(ob, ob->actcol);
+      if (ma == NULL) {
+        return false;
+      }
       RNA_id_pointer_create(&ma->id, &path->ptr[path->len]);
       path->len++;
       return true;