The demise of longtime food mag Gourmet is not stopping the Oct. 17 premiere of the new WGBH series, Gourmet’s Adventures with Ruth. Another of the station’s shows, Gourmet’s Diary of a Foodie, now in its fourth season, also will continue, WGBH spokeswoman Lucy Sholley told The Boston Herald. “Both shows are solid,” Sholley said. “We remain committed to (Gourmet editor-in-chief) Ruth Reichl as an icon in the food world as well as her ideas and editorial input to the format of ‘Adventures with Ruth,’ which will air as planned.”