Trying to fix #46 ("Check for updates" fails behind a web proxy).

ILSpy/AboutPage.cs

@@ -177,7 +177,7 @@ namespace ICSharpCode.ILSpy
 		{
 			var tcs = new TaskCompletionSource<AvailableVersionInfo>();
 			WebClient wc = new WebClient();
-			wc.Proxy = new WebProxy() { UseDefaultCredentials = true };
+			wc.UseDefaultCredentials = true;
 			wc.DownloadDataCompleted += delegate(object sender, DownloadDataCompletedEventArgs e) {
 				if (e.Error != null) {
 					tcs.SetException(e.Error);