From 16bcf7dc8e70890b8ad75c84f8699a4507477668 Mon Sep 17 00:00:00 2001
From: Pratik Borhade <PratikPB2123>
Date: Fri, 14 May 2021 13:43:30 +0200
Subject: Fix T87417: crash when evaluating geo nodes without window manager

Differential Revision: https://developer.blender.org/D11240
---
 source/blender/modifiers/intern/MOD_nodes.cc | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'source')

diff --git a/source/blender/modifiers/intern/MOD_nodes.cc b/source/blender/modifiers/intern/MOD_nodes.cc
index 607b05d39b0..d808052e5f5 100644
--- a/source/blender/modifiers/intern/MOD_nodes.cc
+++ b/source/blender/modifiers/intern/MOD_nodes.cc
@@ -1074,8 +1074,11 @@ static void reset_tree_ui_storage(Span<const blender::nodes::NodeTreeRef *> tree
 
 static Vector<SpaceSpreadsheet *> find_spreadsheet_editors(Main *bmain)
 {
-  Vector<SpaceSpreadsheet *> spreadsheets;
   wmWindowManager *wm = (wmWindowManager *)bmain->wm.first;
+  if (wm == nullptr) {
+    return {};
+  }
+  Vector<SpaceSpreadsheet *> spreadsheets;
   LISTBASE_FOREACH (wmWindow *, window, &wm->windows) {
     bScreen *screen = BKE_workspace_active_screen_get(window->workspace_hook);
     LISTBASE_FOREACH (ScrArea *, area, &screen->areabase) {
-- 
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