Fix ArgumentException in RefreshCommand is passed a null parameter

Author: CodingOctocat

IPConfig/ViewModels/NicViewModel.cs

@@ -123,7 +123,7 @@ protected override void OnActivated()
         base.OnActivated();
 
         Messenger.Register<NicViewModel, RefreshMessage>(this,
-            (r, m) => RefreshCommand.Execute(null));
+            (r, m) => RefreshCommand.Execute(true));
 
         Messenger.Register<NicViewModel, GoBackMessage>(this,
             (r, m) => GoBack());