A night after a stirring, 23-point comeback victory over the Clippers, the Warriors looked a step slow on defense and seemed to have lost some zip on their passes against a strong Bulls squad. […] Stephen Curry figured out a way to get the Warriors’ hearts pumping again late in the fourth quarter, coming off the bench at the 6:16 mark and scoring five straight points that helped carry his team to a 106-94 victory in front of a national TV audience and yet another sellout crowd at Oracle Arena. The Warriors (14-0) tied the best start by a defending champion in league history (Boston Celtics, 1957-58). The Warriors have won a franchise-record 18 straight regular-season games, dating to April of last season, and have won a franchise-best 26 straight home games, dating to January of last season. Were we going to have the energy? said center Festus Ezeli, who had seven points, nine rebounds and two blocked shots in 23 minutes. Barnes made a wing three-pointer, stole the ball from Nikola Mirotic at the other end and then added a three from the other corner to get redemption against Chicago (8-4) — the last visiting team to win at Oracle Arena, a 113-111 overtime win Jan. 27, 2015. The Warriors got off to another lackadaisical start, allowing Chicago, which was playing without point guard Derrick Rose (ankle), to build a 23-12 lead on a Butler alley-oop midway through the first quarter. The Warriors then used a run that spanned the first and second quarters to take a 35-29 edge on a Leandro Barbosa three-pointer at 8:16 of the second.