From c4d3ca00ce7ee899d9a09c9832b2426c84767aed Mon Sep 17 00:00:00 2001
From: Mika Kuoppala <miku@iki.fi>
Date: Wed, 13 Dec 2023 19:18:32 +0200
Subject: [PATCH] src/muse: Avoid touch_petrifies check if bad corpsenm

EGGs can have non permanent monster based corpsenm assigned
(-1). Before doing the touch_petrifies check, make sure
that we have valid corpsenm.
---
 src/muse.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/muse.c b/src/muse.c
index 51273df38..4d381495b 100644
--- a/src/muse.c
+++ b/src/muse.c
@@ -2624,7 +2624,7 @@ searches_for_item(struct monst *mon, struct obj *obj)
             return (boolean) (mcould_eat_tin(mon)
                               && (!resists_ston(mon)
                                   && cures_stoning(mon, obj, TRUE)));
-        if (typ == EGG)
+        if (typ == EGG && obj->corpsenm >= LOW_PM)
             return (boolean) touch_petrifies(&mons[obj->corpsenm]);
         break;
     default: