From: Pasi Kallinen <paxed@alt.org>
Date: Wed, 7 Nov 2018 16:39:00 +0000 (+0200)
Subject: Prevent out of array index
X-Git-Tag: NetHack-3.6.2_Released~170^2~10
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=c6ade9c715ed18a7ca62550f8fdba1a2adccf2ce;p=nethack

Prevent out of array index
---

diff --git a/src/sp_lev.c b/src/sp_lev.c
index 11d692501..488a04d87 100644
--- a/src/sp_lev.c
+++ b/src/sp_lev.c
@@ -3912,9 +3912,9 @@ int n;
     xchar xx = (xchar) x, yy = (xchar) y;
 
     while (n > 0) {
+        --n;
         if (xs[n] == xx && ys[n] == yy)
             return TRUE;
-        --n;
     }
     return FALSE;
 }