HttpRequest: fixes post body retrieval on requests not having any (caused unexpected exception)
HttpRequest: fixes post body retrieval on requests not having any (caused unexpected exception)

christianparpart/x0,xzero/x0,xzero/x0,christianparpart/x0,xzero/x0,christianparpart/x0,christianparpart/x0,christianparpart/x0,christianparpart/x0,christianparpart/x0,xzero/x0,xzero/x0,xzero/x0