详情页面 国家为undefind时接口报错，修复

src/views/ecw/customer/query.vue

@@ -446,7 +446,7 @@ export default {
         this.customerContacts = r.data
       })
 
-      getCountry(this.customer.country).then(r => {
+      getCountry(this.customer.country ? this.customer.country : 0 ).then(r => {
         this.country = r.data.nameZh
       })
     })