remove redundant install and download logic

OpenRA.Game/Download.cs

@@ -19,33 +19,13 @@ namespace OpenRA
 		WebClient wc;
 		bool cancelled;
 
-		public Download(string url, string path, Action<DownloadProgressChangedEventArgs> onProgress, Action<AsyncCompletedEventArgs, bool> onComplete)
-		{
-			wc = new WebClient();
-			wc.Proxy = null;
-
-			wc.DownloadProgressChanged += (_,a) => onProgress(a);
-			wc.DownloadFileCompleted += (_,a) => onComplete(a, cancelled);
-
-			Game.OnQuit += () => Cancel();
-			wc.DownloadFileCompleted += (_,a) => {Game.OnQuit -= () => Cancel();};
-
-			wc.DownloadFileAsync(new Uri(url), path);
-		}
-
-		public void Cancel()
-		{
-			Game.OnQuit -= () => Cancel();
-			wc.CancelAsync();
-			cancelled = true;
-		}
-
 		public static string FormatErrorMessage(Exception e)
 		{
 			var ex = e as System.Net.WebException;
-			if (ex == null) return e.Message;
+			if (ex == null)
+				return e.Message;
 
-			switch(ex.Status)
+			switch (ex.Status)
 			{
 				case WebExceptionStatus.NameResolutionFailure:
 				case WebExceptionStatus.Timeout:
@@ -57,5 +37,26 @@ namespace OpenRA
 					return ex.Message;
 			}
 		}
+
+		public Download(string url, string path, Action<DownloadProgressChangedEventArgs> onProgress, Action<AsyncCompletedEventArgs, bool> onComplete)
+		{
+			wc = new WebClient();
+			wc.Proxy = null;
+
+			wc.DownloadProgressChanged += (_, a) => onProgress(a);
+			wc.DownloadFileCompleted += (_, a) => onComplete(a, cancelled);
+
+			Game.OnQuit += () => Cancel();
+			wc.DownloadFileCompleted += (_, a) => { Game.OnQuit -= () => Cancel(); };
+
+			wc.DownloadFileAsync(new Uri(url), path);
+		}
+
+		public void Cancel()
+		{
+			Game.OnQuit -= () => Cancel();
+			wc.CancelAsync();
+			cancelled = true;
+		}
 	}
 }