From c88c0f2008a0a431ee64ae7a36ed29f927ba3e13 Mon Sep 17 00:00:00 2001
From: Allen Byrne <50328838+byrnHDF@users.noreply.github.com>
Date: Thu, 19 Aug 2021 13:07:49 -0500
Subject: Correct number of args to Windows HDunsetenv macro (#939)

* Correct number of args to Windows HDunsetenv macro

* Correct format
---
 src/H5win32defs.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/H5win32defs.h b/src/H5win32defs.h
index 030b65b..44cf50c 100644
--- a/src/H5win32defs.h
+++ b/src/H5win32defs.h
@@ -80,7 +80,7 @@ struct timezone {
 #define HDstrtok_r(X, Y, Z)   strtok_s(X, Y, Z)
 #define HDtzset()             _tzset()
 #define HDunlink(S)           _unlink(S)
-#define HDunsetenv(N, V, O)   Wsetenv(N, "", 1)
+#define HDunsetenv(N)         Wsetenv(N, "", 1)
 #define HDwrite(F, M, Z)      _write(F, M, Z)
 
 #ifndef H5_HAVE_MINGW
-- 
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