The White Sox have failed to close out a slip-and-fall case.A state appeals panel has ruled an electrician’s claims against the team should be reinstated after they were initially rejected by a trial judge.The plaintiff, Thomas Zahumensky, fell while walking on the outfield roof, as noted in court documents, of then-U.S. Cellular Field in 2013. He was employed by a sign company used by the Sox to perform maintenance and was on his way to check the left field scoreboard before a game when he slipped on a wet patch and …