SAN FRANCISCO—Stephen Curry and his entire supporting cast had to bring some smothering second-half defense to shut down younger brother Seth and the undermanned 76ers. Stephen Curry scored 25 points to Seth’s 24, and the Golden State Warriors surged back after halftime to beat Philadelphia 116–96 on Wednesday night for their fifth straight win. Juan Toscano-Anderson came up big off the bench in the second half, scoring all of his 13 points to go with six rebounds and six assists. “The energy, it’s contagious,” said Andrew Wiggins, who added 19 points. Jordan Poole added 17 points and six assists for the Warriors. He beat the buzzer from halfcourt at halftime to get Golden State within 61–52. Stephen Curry was all smiles seeing one of his signature shots go down for the young guard. The reigning scoring champion shot 9 for 16 with six 3-pointers and added 10 assists for the …