#538 fixed ParallelSocketReactor dtor

Net/include/Poco/Net/ParallelSocketReactor.h

@@ -62,10 +62,17 @@ public:
 	}
 	
 	~ParallelSocketReactor()
+	{
+		try
 		{
 			this->stop();
 			_thread.join();
 		}
+		catch (...)
+		{
+			poco_unexpected();
+		}
+	}
 	
 protected:
 	void onIdle()