Mesa (main): util: Define WIN32_LEAN_AND_MEAN before include of `windows.h` in u_thread.h

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Module: Mesa
Branch: main
Commit: b7773fd105af14d3c8b561df922adc2eda599d10
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=b7773fd105af14d3c8b561df922adc2eda599d10

Author: Yonggang Luo <luoyonggang at gmail.com>
Date:   Sat Apr  9 23:58:34 2022 +0800

util: Define WIN32_LEAN_AND_MEAN before include of `windows.h` in u_thread.h

This is a prepare for move the c11 threads implementation into c source code

Signed-off-by: Yonggang Luo <luoyonggang at gmail.com>
Reviewed-by: Jesse Natalie <jenatali at microsoft.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/15087>

---

 src/util/u_thread.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/util/u_thread.h b/src/util/u_thread.h
index d06ff6beddb..7d50e5ca87a 100644
--- a/src/util/u_thread.h
+++ b/src/util/u_thread.h
@@ -50,6 +50,9 @@
 #if DETECT_OS_LINUX && !defined(ANDROID)
 #include <sched.h>
 #elif defined(_WIN32) && !defined(__CYGWIN__) && _WIN32_WINNT >= 0x0600
+#ifndef WIN32_LEAN_AND_MEAN
+#define WIN32_LEAN_AND_MEAN 1
+#endif
 #include <windows.h>
 #endif