BLooper: don't delete a launch_daemon port.

* Unless the service is really to be quit, the port should stay around;
  but that decision is to be made by the launch_daemon, not the service
  itself.

headers/os/app/Looper.h

@@ -172,6 +172,7 @@ private:
 			BList*			fCommonFilters;
 			bool			fTerminating;
 			bool			fRunCalled;
+			bool			fOwnsPort;
 			uint32			_reserved[11];
 };