Tionesta area resident Joseph R. Dillon was hurt in a traffic mishap, in western Forest County.     But, there is no word that he needed hospital treatment.      Dillon had  been driving a car on a Hickory Township road when he swerved his vehicle to avoid an oncoming pickup truck, whch had swerved across the centerlne.     Dillon's car went off of the road and struck a uility pole.     There was no contact with the oncoming truck, which left the scene.     There's no description of the truck involved.     This mishap took place on Monday evening.