A spokesman for Columbia Pictures says Angelina Jolie is back on the set of her latest movie after a brief trip to the hospital for a minor bump to the head. Jolie sustained the injury Friday while filming an action sequence on Long Island, where the studio is producing her upcoming thriller “Salt.” Spokesman Steve Elzer says the actress was taken to a local hospital, examined and released as a precautionary measure. Elzer says she was back on the set and production has resumed.