From 3ee3c471caec386cb1e7ab736cfa1d5405c4c56b Mon Sep 17 00:00:00 2001
From: Zeno Rogue <zeno@attnam.com>
Date: Wed, 26 Feb 2020 22:29:58 +0100
Subject: [PATCH] fixed a possible crash while drawing ClosedGates

---
 celldrawer.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/celldrawer.cpp b/celldrawer.cpp
index cbaac82b..ff5c2a84 100644
--- a/celldrawer.cpp
+++ b/celldrawer.cpp
@@ -674,7 +674,7 @@ void celldrawer::draw_wall() {
 
   if(c->wall == waClosedGate) {
     int hdir = 0;
-    for(int i=0; i<c->type; i++) if(c->move(i)->wall == waClosedGate)
+    for(int i=0; i<c->type; i++) if(c->move(i) && c->move(i)->wall == waClosedGate)
       hdir = i;
     transmatrix V2 = mscale(V, wmspatial?cgi.WALL:1) * ddspin(c, hdir, M_PI);
     queuepolyat(V2, cgi.shPalaceGate, darkena(wcol, 0, 0xFF), wmspatial?PPR::WALL3A:PPR::WALL);