Something s missing in the UK publicity poster for The Heat, the new crazy-cop flick starring Melissa McCarthy and Sandra Bullock. What is it? Oh, about 30 pounds, according to a mounting chorus of critics. The new buddy-cop comedy, which opens in the U.S. June 28 and across the pond July 31, has McCarthy playing (what else?) the big ol crazy, sloppy Hardy to Bullock s svelte and Spanx-wearing Laurel. Still, even though it s the premise, the poster makers seemed determined to slim McCarthy down.