SAN FRANCISCO – The Warriors often talk about building good habits and generating momentum while approaching the NBA play-in tournament, but Friday night was the latest instance in which their bad habits have been too stubborn to leave.Having frittered away a 12-point halftime lead during a brutal third quarter, the Warriors went into the fourth down by two to the Washington Wizards, who had lost 16 of their last 17 games and, thankfully for the Warriors, are cool to the notion of slowing their rocket to the NBA draft lottery.There they were, two teams missing their top two players, traipsing through the final 12 minutes before the war of the woeful was won by the team sure to play beyond the regular season.Down by five (111-106) with 6:18 remaining, the Warriors went on an 16-2 run that spurred a 131-126 victory, their third in a row, before a sellout crowd too polite to boo moments that invited it but summoned rousing cheers down the stretch.“First half, I saw focus offensively, simple decisions,” coach Steve Kerr said. “And then I thought we let our guard down defensively in the second quarter. A couple back-cut layups, some poor transition,...