Change check to detect Windows.

diff --git a/mcs/class/System/System.Net/WebRequest.cs b/mcs/class/System/System.Net/WebRequest.cs
index cd62b6d7625b5098021a830f84e31a802278b0a3..3ad59e216eddc390665ccd8424abb8a914d9a8f0 100644 (file)
--- a/mcs/class/System/System.Net/WebRequest.cs
+++ b/mcs/class/System/System.Net/WebRequest.cs
@@ -466,7 +466,7 @@ namespace System.Net
                
                internal static bool IsWindows ()
                {
-                       return Environment.GetEnvironmentVariable ("windir") != null;
+                       return (int) Environment.OSVersion.Platform < 4;
                }
 
                internal static void ClearPrefixes ()