修复刷卡机管理bug

src/pages/card/machine/index.jsx

@@ -85,7 +85,7 @@ const Machine = () => {
             render: (_, record) => {
                 const findGate = gateList.find(item => item.id === record.gateId);
                 return <div>
-                    {findGate.name || '默认档口'}
+                    {findGate ? findGate.name : '默认档口'}
                 </div>
             }
         },