Added missing comment

git-svn-id: file:///srv/devel/repo-conversion/nusu@126 d2e56fa2-650e-0410-a79f-9358c0239efd

Source/Tracking/Transaction.Test.cs

@@ -207,6 +207,10 @@ namespace Nuclex.Support.Tracking {
       Assert.IsTrue(test.Wait(TimeSpan.Zero));
     }
 
+    /// <summary>
+    ///   Verifies that no error occurs when an even subscriber to the AsyncEnded event
+    ///   unsubscribes in the event callback handler
+    /// </summary>
     [Test]
     public void TestUnsubscribeInEndedCallback() {
       TestTransaction monitored = new TestTransaction();