From f54e19083eb140bfd3cb187c6460636714bd5155 Mon Sep 17 00:00:00 2001
From: Jonathan G Rennison <j.g.rennison@gmail.com>
Date: Fri, 7 Jan 2022 17:38:26 +0000
Subject: [PATCH] Fix crash which could occur when removing invalidated link
 graph flow.

---
 src/linkgraph/linkgraphjob.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/linkgraph/linkgraphjob.cpp b/src/linkgraph/linkgraphjob.cpp
index 761fe212c0..d9c4fe4ab7 100644
--- a/src/linkgraph/linkgraphjob.cpp
+++ b/src/linkgraph/linkgraphjob.cpp
@@ -153,12 +153,13 @@ void LinkGraphJob::FinaliseJob()
 			if (new_it == flows.end()) {
 				if (_settings_game.linkgraph.GetDistributionType(this->Cargo()) != DT_MANUAL) {
 					if (it->Invalidate()) {
+						NodeID origin = it->GetOrigin();
 						FlowStat shares(INVALID_STATION, INVALID_STATION, 1);
 						it->SwapShares(shares);
 						it = ge.flows.erase(it);
 						for (FlowStat::const_iterator shares_it(shares.begin());
 								shares_it != shares.end(); ++shares_it) {
-							RerouteCargoFromSource(st, this->Cargo(), it->GetOrigin(), shares_it->second, st->index);
+							RerouteCargoFromSource(st, this->Cargo(), origin, shares_it->second, st->index);
 						}
 					} else {
 						++it;