From 54373160dfff917c4cf5cb7071711ba41856e71c Mon Sep 17 00:00:00 2001
From: Markus Sauermann <6299227+Sauermann@users.noreply.github.com>
Date: Wed, 1 Jan 2025 22:20:57 +0100
Subject: [PATCH] Fix Crash with `GraphNode`

When using `queue_free()` on GraphNodes, `p_from` can become `nullprt`.
This PR adds a check to prevent crashes in these situations.
---
 scene/gui/graph_edit_arranger.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/scene/gui/graph_edit_arranger.cpp b/scene/gui/graph_edit_arranger.cpp
index 55fbb78fab..f017346b66 100644
--- a/scene/gui/graph_edit_arranger.cpp
+++ b/scene/gui/graph_edit_arranger.cpp
@@ -79,6 +79,9 @@ void GraphEditArranger::arrange_nodes() {
 
 			for (const Ref<GraphEdit::Connection> &connection : connection_list) {
 				GraphNode *p_from = Object::cast_to<GraphNode>(node_names[connection->from_node]);
+				if (!p_from) {
+					continue;
+				}
 				if (connection->to_node == graph_element->get_name() && (p_from->is_selected() || arrange_entire_graph) && connection->to_node != connection->from_node) {
 					if (!s.has(p_from->get_name())) {
 						s.insert(p_from->get_name());