From 6043f583b0355086b7e942f3c05b88b23e3f4122 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C5=82=20Janiszewski?= <janisozaur@gmail.com>
Date: Thu, 17 Jan 2019 23:39:27 +0100
Subject: [PATCH] Add missing nullptr check in
 rct_peep::UpdateRideMazePathfinding

Fixes https://www.nedesigns.com/park/3359/h2h7-r4-diamondheights/
---
 src/openrct2/peep/Guest.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/openrct2/peep/Guest.cpp b/src/openrct2/peep/Guest.cpp
index bb4b238d39..da4cdff6af 100644
--- a/src/openrct2/peep/Guest.cpp
+++ b/src/openrct2/peep/Guest.cpp
@@ -4779,7 +4779,12 @@ void rct_peep::UpdateRideMazePathfinding()
 
     } while (!(tileElement++)->IsLastForTile());
 
-    uint16_t mazeEntry = tileElement->AsTrack()->GetMazeEntry();
+    auto trackMazeEntry = tileElement->AsTrack();
+    if (trackMazeEntry == nullptr)
+    {
+        return;
+    }
+    uint16_t mazeEntry = trackMazeEntry->GetMazeEntry();
     uint16_t openHedges = 0;
     // var_37 is 3, 7, 11 or 15