取消调拨异常数据显示优化

@@ -89,8 +89,9 @@ export default function() {
                 title: '取消调拨',
                 align: 'center',
                 render: (h, params) => {
-                    const num = params.row.cancelNum;
+                    let num = params.row.cancelNum;
 
+                    num = num || num === 0 ? num : '-';
                     return (
                         <span class={{'red-text': num > 0}}>{num}</span>
                     );