From 96a750d99e9efe7226cff7878f30c9ef18192e5f Mon Sep 17 00:00:00 2001
From: PatR <rankin@nethack.org>
Date: Fri, 18 Apr 2025 20:29:27 -0700
Subject: [PATCH] undo commit 050846ada9 - lua memory allocator

Commit 050846ada9bc62a694c6ed80d40b17f74b342629 checked for
re_alloc(NULL,n) and returned alloc(n) for that case.  After testing
MONITOR_HEAP and heaputil, the original code worked as intended.
I'm not sure what was going wrong yesterday.

Switch back to the previous code.  I could have used 'git revert'
but haven't.
---
 src/nhlua.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/src/nhlua.c b/src/nhlua.c
index bff707637..080cf1552 100644
--- a/src/nhlua.c
+++ b/src/nhlua.c
@@ -2875,9 +2875,6 @@ nhl_alloc(void *ud, void *ptr, size_t osize UNUSED, size_t nsize)
             return NULL;
     }
 
-    /* realloc(NULL, size) is legitimate but confuses MONITOR_HEAP */
-    if (!ptr)
-        return alloc((unsigned) nsize);
     return re_alloc(ptr, (unsigned) nsize);
 }