By Faye Fearon Cinema is a key port of call for issuing enduring style lessons — especially when said lessons are fitted on Hollywood’s most iconic actors. Think of Marlon Brando’s simple white t-shirt in A Streetcar Named Desire. Or Alain Delon’s elegant beige trench coat in Le Samourai. These men made an enduring case for the most essential items that sit in a man’s wardrobe, and when it comes to the tailoring section, one case in particular stands out: Robert Redford — specifically, in Michael Ritchie’s acclaimed 1972 drama The Candidate. Released 50 years ago on June 29, the film stars Red…