From 0d3c8584528591c9f85e3009b119f6403f8931a4 Mon Sep 17 00:00:00 2001
From: Pasi Kallinen <paxed@alt.org>
Date: Wed, 29 Apr 2015 17:04:49 +0300
Subject: [PATCH] Check for valid coord in obj_nexto_xy

---
 src/mkobj.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/mkobj.c b/src/mkobj.c
index a9d0ebfe8..699c5dbdb 100644
--- a/src/mkobj.c
+++ b/src/mkobj.c
@@ -2194,7 +2194,7 @@ unsigned oid;
     for (fx = ex; abs(fx - ex) < 3; fx += dx) {
         for (fy = ey; abs(fy - ey) < 3; fy += dy) {
             /* 0, 0 was checked above */
-            if (fx != x || fy != y) {
+            if (isok(fx,fy) && (fx != x || fy != y)) {
                 if ((otmp = sobj_at(otyp, fx, fy)) != 0) {
                     return otmp;
                 }