'Wild Horse Nine' review: Is John Malkovich at the center of a meta puzzle?

As a comedy, Wild Horse Nine works fine. British-Irish playwright-turned-filmmaker Martin McDonagh imbues it with the blisteringly macabre sense of humor that he's forged in work like his 2003 play The Pillowman and his feature film debut In Bruges, as well as later movies like Seven Psychopaths; Three Billboards Outside Ebbing, Missouri; and The Banshees of Inisherin. As a Martin McDonagh comedy, it feels a bit redundant. But perhaps that's precisely the point? From its premise, Wild Horse Nine echoes…