A man who swiped an elderly woman’s house with phony documents did time for the crime — but an appellate court is letting the city off the hook for processing the paperwork that let the ex-con make himself at home. A Brooklyn appeals court has ruled that a judge was right to toss a lawsuit brought against the city by Jennifer Merin — whose Queens abode was filched by a criminal who filed a fraudulent deed. Merin, 74, had sued the city for not catching the forgery when the paperwork was first filed, but lost on appeal when the court...