From 13846483970602fe15414c92a6c88840719a9a5b Mon Sep 17 00:00:00 2001
From: Nicolas Chappe <74881848+nchappe@users.noreply.github.com>
Date: Mon, 20 Dec 2021 18:00:12 +0100
Subject: [PATCH] Fix #9708: [Linkgraph] Don't assume vehicles have a non-zero
 max speed

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

diff --git a/src/linkgraph/refresh.cpp b/src/linkgraph/refresh.cpp
index b2dafa99e7e5b..f62a4347d369b 100644
--- a/src/linkgraph/refresh.cpp
+++ b/src/linkgraph/refresh.cpp
@@ -210,6 +210,8 @@ void LinkRefresher::RefreshStats(const Order *cur, const Order *next)
 			uint cargo_quantity = this->capacities[c];
 			if (cargo_quantity == 0) continue;
 
+			if (this->vehicle->GetDisplayMaxSpeed() == 0) continue;
+
 			/* If not allowed to merge link graphs, make sure the stations are
 			 * already in the same link graph. */
 			if (!this->allow_merge && st->goods[c].link_graph != st_to->goods[c].link_graph) {