“Curb Your Enthusiasm” is coming to an end after its 12th season! “Extra’s” Mona Kosar Abdi chats with Cheryl Hines about the bittersweet goodbye. She also dishes on working with Larry David and how she keeps from breaking into laughter. Plus, she talks about a possible transition into a more political role now that her husband Robert Kennedy Jr. is running for president. “Curb Your Enthusiasm” airs Sundays on HBO.