NEW YORK — Following the Nets’ fifth straight loss to the Houston Rockets on Wednesday, third-year guard Cam Thomas was quick to remind reporters that he is only human. And as good as he can be offensively, he is not immune to the occasional shooting slump. Even the greatest scorers in the NBA have to deal with them from time to time. How they respond is what defines them. Thomas went 0 of 18 from the field over his last two games entering Friday’s rematch against the Oklahoma City Thunder. Two straight games without a made shot. But in Brooklyn’s 123-115 upset win over the No. 2 seed in the W…