Gov. George Pataki and other prominent politicians visited Kiryas Joel yesterday to pay respects to Mayor Abraham Wieder, whose son, Boruch, died of brain cancer on Saturday at age 36. Boruch Wieder was the eldest of the mayor�s 10 children. He was diagnosed with a brain tumor four years ago.? Visiting him yesterday were Pataki; state Senate Democratic Leader David Paterson, who�s running for lieutenant governor; and Westchester County District Attorney Jeanine Pirro, Republican candidate for state attorney general.