[Bf-blender-cvs] [97b226ac511] blender-v3.3-release: Fix T100049: Crash when render finishes

[Richard Antalik]

Commit: 97b226ac51188ce1f4ab8bee7820c7dd296c7012
Author: Richard Antalik
Date:   Tue Aug 2 17:52:40 2022 +0200
Branches: blender-v3.3-release
https://developer.blender.org/rB97b226ac51188ce1f4ab8bee7820c7dd296c7012

Fix T100049: Crash when render finishes

Caused by NULL dereference of `Editing` before NULL check was done.

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

M	source/blender/sequencer/intern/utils.c

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

diff --git a/source/blender/sequencer/intern/utils.c b/source/blender/sequencer/intern/utils.c
index 2026e322763..e6c641a5532 100644
--- a/source/blender/sequencer/intern/utils.c
+++ b/source/blender/sequencer/intern/utils.c
@@ -338,14 +338,15 @@ void seq_open_anim_file(Scene *scene, Sequence *seq, bool openfile)
 const Sequence *SEQ_get_topmost_sequence(const Scene *scene, int frame)
 {
   Editing *ed = scene->ed;
-  ListBase *channels = SEQ_channels_displayed_get(ed);
-  const Sequence *seq, *best_seq = NULL;
-  int best_machine = -1;
 
   if (!ed) {
     return NULL;
   }
 
+  ListBase *channels = SEQ_channels_displayed_get(ed);
+  const Sequence *seq, *best_seq = NULL;
+  int best_machine = -1;
+
   for (seq = ed->seqbasep->first; seq; seq = seq->next) {
     if (SEQ_render_is_muted(channels, seq) ||
         !SEQ_time_strip_intersects_frame(scene, seq, frame)) {