From 9df851d5da9f38f0955c55bf9844f30918c417d1 Mon Sep 17 00:00:00 2001
From: Pasi Kallinen <paxed@alt.org>
Date: Sat, 25 May 2024 18:32:34 +0300
Subject: [PATCH] Fix split monster with 0 max hp

A gremlin first hit a fire trap, reducing its max hp to 1, and
then it plunged into water, making the split gremlin have 0 max hp.
---
 src/potion.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/potion.c b/src/potion.c
index 9f5d0c722..9a4731e2c 100644
--- a/src/potion.c
+++ b/src/potion.c
@@ -2834,7 +2834,7 @@ split_mon(
             disp.botl = TRUE;
             You("multiply%s!", reason);
         }
-    } else {
+    } else if (mon->mhpmax > 1) {
         mtmp2 = clone_mon(mon, 0, 0);
         if (mtmp2) {
             mtmp2->mhpmax = mon->mhpmax / 2;