call out hack in comment

Rx.NET/Source/System.Reactive.Core/Reactive/Concurrency/Scheduler.cs

@@ -14,8 +14,10 @@ namespace System.Reactive.Concurrency
     {
         // TODO - Review whether this is too eager.
         // Make first use of Scheduler trigger access to and initialization of the CAL.
-        //   private static DefaultScheduler s_default = DefaultScheduler.Instance;
-        // Causes race condition with Locks in DefaultScheduler's static ctor chain
+
+        // HACK: Causes race condition with Locks in DefaultScheduler's static ctor chain
+        // private static DefaultScheduler s_default = DefaultScheduler.Instance;
+        
 
         /// <summary>
         /// Gets the current time according to the local machine's system clock.