As the Warriors wobble through the schedule with an unwanted balance between wins and losses, they’re reduced to appreciating even the slightest glimpse of goodness. Anything that tells them they might be better in the next game.The latest glimpse of goodness appeared Monday night in the form of De’Anthony Melton, who, in a 120-107 win over the Brooklyn Nets, looked like the kind of defensive closer the Warriors will need to finish games.Golden State’s atrocious record in clutch games most often is the result of its inability to stop opponents. Stephen Curry and Jimmy Butler III usually can find buckets, but the defense tends to come apart behind late closeouts, slow rotations and other breakdowns.When this game got close in the final minutes, Melton’s defense led the charge in giving the Warriors the kind of breathing room they’ve struggled to create in the final minutes.“Activity,” Melton told reporters at Barclays Center. “We kind of locked in on a game plan, and we kind of understood what they had going on through the last three quarters. So, we just locked in. We just said it’s time to slow down the run they’re...