Commit 61f3438 for zlib

commit 61f343885ee9560d541dcb1a5df94f441d75624f
Author: Mark Adler <git@madler.net>
Date:   Sat Feb 7 22:26:38 2026 -0800

    Use _WIN32 instead of WIN32 in pufftest.c.

diff --git a/contrib/puff/pufftest.c b/contrib/puff/pufftest.c
index 19230b9..6cad56f 100644
--- a/contrib/puff/pufftest.c
+++ b/contrib/puff/pufftest.c
@@ -24,7 +24,7 @@
 #include <stdlib.h>
 #include "puff.h"

-#if defined(MSDOS) || defined(OS2) || defined(WIN32) || defined(__CYGWIN__)
+#if defined(MSDOS) || defined(OS2) || defined(_WIN32) || defined(__CYGWIN__)
 #  include <fcntl.h>
 #  include <io.h>
 #  define SET_BINARY_MODE(file) setmode(fileno(file), O_BINARY)