Actor Adam Sandler was spotted grabbing a bite at a Southern California In-N-Out Burger earlier this month — stunning fellow diners who didn’t expect to see the Hollywood star lining up for a fast-food meal. Dressed down in an olive-green hoodie, shorts and sneakers, the “Happy Gilmore” star casually ordered and picked up his food on Jan. 3 at the restaurant in Cabazon, a desert town in Riverside County, drawing double takes from customers inside the restaurant, according to ABC7 . Restaurant-