ETCancellationTokenSource...

ETCancellationTokenSource Dispose中不应该调用CancellationTokenSource的Cancel方法，应该调用CancellationTokenSource的Dispose方法

Unity/Assets/Model/Base/Async/ETCancellationTokenSource.cs

@@ -72,7 +72,8 @@ namespace ETModel
             
             base.Dispose();
             
-            this.CancellationTokenSource?.Cancel();
+            this.CancellationTokenSource?.Dispose();
+            this.CancellationTokenSource = null;
         }
     }
 }
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