Winona Ryder is “very protective” of her ‘Stranger Things’ co-stars. The 50-year-old actress stars alongside the likes of Millie Bobby Brown, Gaten Matarazzo and Noah Schnapp in the sci-fi drama series, and she’s confessed to being protective of them. She shared: “I have mixed feelings about kids in the industry, but we’ve really scored with these kids.” Winona – who plays Joyce Byers in the hit show – has also teased the new series. The Hollywood star told ‘Daily Pop’: “It has progressively gotten more frightening. But what I love about it is it does keep that sort of personal heart, love, so…