From 55a7369cd8c4a6b58bcd62f02a3a2d486952c897 Mon Sep 17 00:00:00 2001
From: gitlost <burmartke@gmail.com>
Date: Tue, 5 Mar 2024 22:15:00 +0000
Subject: [PATCH] output: `out_fopen()` fix `_WIN32` def check (ticket #313,
 props   Axel Waggershauser)

---
 backend/output.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/backend/output.c b/backend/output.c
index d9c3415d..3f109990 100644
--- a/backend/output.c
+++ b/backend/output.c
@@ -971,7 +971,7 @@ INTERNAL FILE *out_fopen(const char filename[256], const char *mode) {
         memcpy(dirname, filename, dirend - filename);
         dirname[dirend - filename] = '/';
         dirname[dirend - filename + 1] = '\0';
-#if _WIN32
+#ifdef _WIN32
         for (d = dirname; *d; d++) { /* Convert to Unix separators */
             if (*d == '\\') {
                 *d = '/';