Photo: Ryan Sweeney/Mastermind Movie Inc. Kelly Reichardt is worried she’s coming off as a grouch during our conversation at the New York Film Festival, where her latest film, The Mastermind , is playing ahead of its release on October 17. “Temper this! Don’t make me sound like such an old crank,” she requests after going on an extensive tangent about how much she hates when people eat during movie screenings — and, yes, that includes popcorn. (“In France, you go sit in a nice beautiful seat