An explosive verdict was reached Wednesday night in the slaying of hero NYPD cop Jonathan Diller — with the jury acquitting the shooter of the top charge of first-degree murder and settling on manslaughter. Guy Rivera, 36, who fatally shot the officer and married dad outside a cell-phone store in Queens two years ago, was convicted on all of the lesser charges, including aggravated manslaughter, attempted murder of Diller’s partner and weapons raps.