Fix error in epic fail handler if console input redirected

Eliminates an unhandled InvalidOperationException and loop causing thousands of sentry errors

src/NzbDrone.Console/ConsoleApp.cs

@@ -117,7 +117,7 @@ namespace NzbDrone.Console
                     {
                         System.Threading.Thread.Sleep(1000);
 
-                        if (System.Console.KeyAvailable)
+                        if (!System.Console.IsInputRedirected && System.Console.KeyAvailable)
                         {
                             break;
                         }