YET ANOTHER reporter is facing jail at the hands of a federal judge for doing his job. Jim Taricani, a reporter for WJAR television in Rhode Island, was convicted last week of criminal contempt of court for refusing to identify the person who leaked him an FBI videotape of a public official in Providence taking a bribe. The story clearly was important. Several local officials, including the one on tape, went to prison in connection with the federal corruption investigation that produced the tape. But Chief Judge Ernest C. Torres of federal district court in Providence appointed a special prosecutor...