fix: 修正additionlist取数异常.

components/product/Quote.vue

@@ -701,7 +701,7 @@ export default {
               }
               return result;
             });
-            vals.additionlist = additionlist.map(item => {
+            vals.additionlist = (additionlist || []).map(item => {
               return {
                 ...item,
                 id: item.id + '-1'  // 修改 id