COURCHEVEL, France — Mikaela Shiffrin wrote more World Cup history Saturday, winning a slalom for a women’s record-equaling 35th career victory in the discipline and 50th win overall. Shiffrin extended her first-run lead of 0.04 seconds to finish 0.29 clear of Petra Vlhova, who has been runner-up to the American star in all three traditional slaloms this season. Shiffrin tied her childhood idol Marlies Schild of Austria with 35 slalom wins on the World Cup circuit. Schild’s final slalom victory, in December 2013, was achieved at the age of 32. Shiffrin turns 24 in March. Shiffrin is also the youngest of the eight skiers, four men and four women, to win 50 World Cup races across all disciplines. Swedish great Ingemar Stenmark’s 86 wins is the record. “It’s so distracting that they give out those numbers for me,” Shiffrin said in a post-race interview. “I was trying as hard as I could not to focus on that today.” Olympic slalom champion Frida Hansdotter was third Saturday, trailing Shiffrin by 0.37. Shiffrin has won every slalom race since her surprise fourth-placed finish at the Pyeongchang Olympics in February. She said she was “maybe a bit lucky today” after overcoming a rare…