From 1fc661afdcce266333bbc7898d5a5fb76f638f5c Mon Sep 17 00:00:00 2001
From: wolfbeast <mcwerewolf@gmail.com>
Date: Sat, 16 Dec 2017 19:53:16 +0100
Subject: [PATCH] Silence macro redefinition warnings in ICU

---
 intl/icu/source/common/umutex.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/intl/icu/source/common/umutex.h b/intl/icu/source/common/umutex.h
index b52010f8ae..e26ac3555c 100644
--- a/intl/icu/source/common/umutex.h
+++ b/intl/icu/source/common/umutex.h
@@ -86,7 +86,9 @@ U_NAMESPACE_END
 //                Original plan was to use gcc atomics for MinGW, but they
 //                aren't supported, so we fold MinGW into this path.
 
+# ifndef WIN32_LEAN_AND_MEAN
 # define WIN32_LEAN_AND_MEAN
+# endif
 # define VC_EXTRALEAN
 # define NOUSER
 # define NOSERVICE