OrdersViewController: Simplifies callback

Author: jleandroperez

WooCommerce/Classes/ViewRelated/Orders/OrdersViewController.swift

@@ -154,13 +154,12 @@ private extension OrdersViewController {
 
         let action = OrderAction.retrieveOrders(siteID: siteID) { [weak self] (orders, error) in
             self?.refreshControl.endRefreshing()
-            guard error == nil else {
-                DDLogError("⛔️ Error synchronizing orders: \(error.debugDescription)")
-                return
-            }
+
             guard let orders = orders else {
+                DDLogError("⛔️ Error synchronizing orders: \(error.debugDescription)")
                 return
             }
+
             self?.orders = orders
             self?.tableView.reloadData()
         }