From 9d292e59fc9aa70547812af47fe0a8df4c5d162b Mon Sep 17 00:00:00 2001
From: Zeno Rogue <zeno@attnam.com>
Date: Sun, 5 Apr 2020 10:55:13 +0200
Subject: [PATCH] fixed potential crash in moveIvy

---
 monstermove.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/monstermove.cpp b/monstermove.cpp
index 298b63b8..650abb01 100644
--- a/monstermove.cpp
+++ b/monstermove.cpp
@@ -979,9 +979,12 @@ EX void moveivy() {
     while(c->monst != moIvyRoot) {
       if(!isIvy(c->monst)) {
         raiseBuggyGeneration(c, "that's not an Ivy!");
+        break;
         }
-      if(c->mondir == NODIR)
+      if(c->mondir == NODIR) {
         raiseBuggyGeneration(c, "wrong mondir!");
+        break;
+        }
         
       forCellIdEx(c2, j, c) {
         if(canAttack(c, c->monst, c2, c2->monst, AF_ONLY_FRIEND | AF_GETPLAYER)) {