fix 新增物品弹窗 bug

src/views/games/details/gift/store.vue

@@ -417,7 +417,14 @@ export default {
     openModal(isNew, data) {
       if (isNew) {
         this.isNew = true
-        this.modalForm = JSON.parse(JSON.stringify(this.modalForm))
+        this.modalForm = {
+          codes: [],
+          used_codes: [],
+          gift_id: '',
+          gift_name: '',
+          gift_url: '',
+          game_id: this.gameInfo.game_id,
+        }
         this.codesStr = ''
         this.usedCodesStr = ''
       } else {