NEW YORK — There was no way the Nets were giving away another game. After Spencer Dinwiddie hit the buzzer-beating shot to win it at Barclays Center on Wednesday, the Nets stared another disappointing defeat in the face, this time against the West’s 12th-seeded Portland Trail Blazers, a team lacking the majority of its main talent, including injured superstar Damian Lillard. But Kevin Durant got the help he didn’t have against Dallas: No, not the unvaccinated Kyrie Irving, but sharpshooter Seth Curry, who returned from an ankle injury to pepper the Trail Blazers with a barrage of 3s to help li…