Four young men have been arrested in the murder of former General Hospital actor Johnny Wactor. The Los Angeles Police Department says the suspects are from the Los Angeles area; Wactor was killed in downtown LA in the wee hours of May 25 when he stumbled upon three men attempting to steal the catalytic converter from his car as he was returning to it after finishing a shift working at a rooftop bar, the AP reports. Robert Barceleau, 18; Leonel Gutierrez, 18; and Sergio Estrada, 18, were booked on suspicion of murder and Frank Olano, 22, was booked on suspicion of being an accessory to murder,…