From bb1070b7957133f5548088f4aa9834cbaebb5e39 Mon Sep 17 00:00:00 2001
From: helixhorned <helixhorned@1a8010ca-5511-0410-912e-c29ae57300e0>
Date: Fri, 20 Jan 2012 15:48:03 +0000
Subject: [PATCH] Fix a potential wall[-1] access in Mapster32.

git-svn-id: https://svn.eduke32.com/eduke32@2273 1a8010ca-5511-0410-912e-c29ae57300e0
---
 polymer/eduke32/build/src/build.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/polymer/eduke32/build/src/build.c b/polymer/eduke32/build/src/build.c
index 9e0d5821d..558dc9362 100644
--- a/polymer/eduke32/build/src/build.c
+++ b/polymer/eduke32/build/src/build.c
@@ -7752,8 +7752,7 @@ static int32_t getlinehighlight(int32_t xplc, int32_t yplc, int32_t line)
         }
     }
 
-    j = wall[closest].nextwall;
-    if (closest>=0 && j >= 0)
+    if (closest>=0 && (j = wall[closest].nextwall) >= 0)
 #ifdef YAX_ENABLE
     if (m32_sideview || ((graywallbitmap[j>>3]&(1<<(j&7)))==0))
 #endif