[fix time]time service now stopps properly

StgSharp.Common/Timing/TimeSpanProvider.Awaiting.cs

@@ -88,7 +88,7 @@ namespace StgSharp.Timing
             // mark provider as ended so external users can observe terminal state
             Volatile.Write(ref _endedFlag, 1);
             s_unusedID.Push(TokenID);
-            _event.Dispose();
+            _event.Set();
             GC.SuppressFinalize(this);
         }
 
@@ -111,7 +111,9 @@ namespace StgSharp.Timing
             while (true)
             {
                 int cur = Volatile.Read(ref _pendingSpans);
-                if (cur == 0) {
+                if (cur == 0)
+                {
+                    _event.Dispose();
                     return;
                 }
 
@@ -207,7 +209,8 @@ namespace StgSharp.Timing
             {
                 // mark ended due to sequence timeout, then dispose
                 Volatile.Write(ref _endedFlag, 1);
-                Console.WriteLine("Time span ended.");
+
+                // Console.WriteLine("Time span ended.");
                 Dispose();
                 return false;
             }