System/Windows: Reduce dependencies.

Bigcheese · Bigcheese · commit bb6e51c957e3 · 2010-11-09T15:11:07.000Z
llvm-svn: 118504
diff --git a/llvm/lib/System/Win32/Win32.h b/llvm/lib/System/Win32/Win32.h
@@ -18,6 +18,7 @@
 
 // Require at least Windows 2000 API.
 #define _WIN32_WINNT 0x0500
+#define WIN32_LEAN_AND_MEAN
 
 #include "llvm/Config/config.h" // Get build system configuration settings
 #include <Windows.h>
