Julian Casablancas gifted John Mulaney with a trench coat and pair of sunglasses he wore on Saturday Night Live.The stand-up comedian, who hosted the show for the fourth time last week (October 31), told Seth Meyers that the Strokes frontman let him keep the coat he wore onstage as the band performed.Mulaney wore the coat while being interviewed by Myers, and explained how he was given it after a conversation with Casablancas when they shot promo clips together.“I said, ‘That’s a really cool