There’s been a subtle change in the nets — literally — at Staples Center in the past five games. Staples Center has become one of the first NHL arenas to adopt the new “thin mesh’’ on the tops of the nets. The purpose, mostly, is to make things easier for the video-review crew in Toronto to accurately make calls in terms of whether or not the puck crossed the goal line, since usually, those reviews utilize the the over-the-net camera. Eventually, all arenas will be outfitted with the new nets. Here are a couple pictures — before and after — to show how the nets have changed, and if you’re a “How It Works’’ kind of person, you can also watch a net-installation video by clicking here (warning: it’s pretty dry stuff). One would think, though, that the Kings would prefer to see Toronto improve its system for reviewing high-stick deflection calls…