[Bf-blender-cvs] [fc85490c2d2] master: Fix T73906: Crash calling render from Python

[Campbell Barton]

Commit: fc85490c2d29546616eaf0b57c92ba3561edd9c2
Author: Campbell Barton
Date:   Mon Feb 17 17:21:42 2020 +1100
Branches: master
https://developer.blender.org/rBfc85490c2d29546616eaf0b57c92ba3561edd9c2

Fix T73906: Crash calling render from Python

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

M	source/blender/editors/render/render_internal.c

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

diff --git a/source/blender/editors/render/render_internal.c b/source/blender/editors/render/render_internal.c
index f1ded6c21d3..c2b2d36d91c 100644
--- a/source/blender/editors/render/render_internal.c
+++ b/source/blender/editors/render/render_internal.c
@@ -333,6 +333,8 @@ static int screen_render_exec(bContext *C, wmOperator *op)
   re = RE_NewSceneRender(scene);
 
   G.is_break = false;
+
+  RE_draw_lock_cb(re, NULL, NULL);
   RE_test_break_cb(re, NULL, render_break);
 
   ima = BKE_image_verify_viewer(mainp, IMA_TYPE_R_RESULT, "Render Result");