From 8c3c657f0e8130274618cbe63cb2effcbac27df5 Mon Sep 17 00:00:00 2001
From: Maurice Kalinowski <maurice.kalinowski@qt.io>
Date: Tue, 15 Nov 2016 13:19:51 +0100
Subject: mingw: fix build

Change-Id: I0fbd0d237e83d0a5522a42d5045a893114288c2c
Reviewed-by: Alex Blasche <alexander.blasche@qt.io>
---
 src/publishsubscribe/registrylayer_win_p.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/publishsubscribe/registrylayer_win_p.h b/src/publishsubscribe/registrylayer_win_p.h
index 607aae44..17175920 100644
--- a/src/publishsubscribe/registrylayer_win_p.h
+++ b/src/publishsubscribe/registrylayer_win_p.h
@@ -59,7 +59,9 @@
 #if defined(Q_OS_WIN)
 
 // Define win32 version to pull in RegisterWaitForSingleObject and UnregisterWait.
-#define _WIN32_WINNT 0x0500
+#ifndef _WIN32_WINNT
+  #define _WIN32_WINNT 0x0500
+#endif
 #include <windows.h>
 
 #define RegistryCallback WAITORTIMERCALLBACK
-- 
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