Although “Saturday Night Live” recently poked fun at “War Horse” with a sketch featuring Andy Samberg and Jimmy Fallon, there were no hard feelings with the movie’s director, Steven Spielberg, who was the first to arrive at Saturday’s after-party at Meatpacking hot spot Abe & Arthur’s. A witness overheard Spielberg “laughing and congratulating Samberg on the show.” Also there: Green Bay Packers quarterback Aaron Rodgers, the NFL’s recently crowned MVP, who says he wants to host the NBC show; Saturday’s “SNL” host, Zooey Deschanel; Olivia Wilde and Jason Sudeikis, Seth Meyers and Fred Armisen.