From edf5ddad4f84151a02fd00750aa7885b220de7d1 Mon Sep 17 00:00:00 2001
From: cryptozoidberg <crypto.zoidberg@gmail.com>
Date: Thu, 24 Oct 2019 14:19:14 +0200
Subject: [PATCH] mdbx: get rid of macro redefinition warnings under MSVC.

This resolves https://github.com/leo-yuriev/libmdbx/pull/63

Change-Id: Id5ca071fe3060b8d508a28fd48ae13430a7e78a8
---
 src/elements/osal.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/elements/osal.h b/src/elements/osal.h
index cd06271e..f6b5e8c5 100644
--- a/src/elements/osal.h
+++ b/src/elements/osal.h
@@ -118,7 +118,9 @@
 #endif
 
 #if defined(_WIN32) || defined(_WIN64)
+#ifndef WIN32_LEAN_AND_MEAN
 #define WIN32_LEAN_AND_MEAN
+#endif
 #include <tlhelp32.h>
 #include <windows.h>
 #include <winnt.h>