makes log tests go a little quicker

src/Umbraco.Tests/Logging/DebugAppender.cs

@@ -10,8 +10,12 @@ namespace Umbraco.Tests.Logging
         public TimeSpan AppendDelay { get; set; }
         public int LoggedEventCount { get { return m_eventsList.Count; } }
 
+        public bool Cancel { get; set; }
+
         protected override void Append(LoggingEvent loggingEvent)
         {
+            if (Cancel) return;
+
             if (AppendDelay > TimeSpan.Zero)
             {
                 Thread.Sleep(AppendDelay);

src/Umbraco.Tests/Logging/ParallelForwarderTest.cs

@@ -118,6 +118,8 @@ namespace Umbraco.Tests.Logging
             Assert.That(debugAppender.LoggedEventCount, Is.EqualTo(0));
             Assert.That(watch.ElapsedMilliseconds, Is.LessThan(testSize));
             Console.WriteLine("Logged {0} errors in {1}ms", testSize, watch.ElapsedMilliseconds);
+
+            debugAppender.Cancel = true;
         }
 
         [Test]