ANAHEIM, Calif. — Trevor Zegras scored the go-ahead goal early in the third period, John Gibson made 26 saves in his 500th career NHL game and the Anaheim Ducks beat Dallas 2-1 on Tuesday night, snapping the Stars’ five-game winning streak. Zegras redirected Alex Killorn’s shot past Oettinger 4:07 into the third period to put the Ducks back on top. …