修复新建空运订单关闭后左侧新建NaN的问题

src/views/ecw/order/edit.vue

@@ -949,7 +949,11 @@ export default {
         this.getOrder()
     }
     if(this.$route.query.transportType != this.transportId){
-      this.$set(this.form.transportId, +this.$route.query.transportType || null)
+      let transportType = undefined
+      if(this.$route.query.transportType){
+        transportType = +this.$route.query.transportType
+      }
+      this.$set(this.form, 'transportId', transportType)
     }
 
     // 变更出货渠道