切换编辑客户/客户详情/全部客户这几个页面，有时候会报错 bug修复1

src/api/ecw/customerContacts.js

@@ -71,9 +71,13 @@ export function exportCustomerContactsExcel(query) {
 
 // 根据客户ID获得联系人列表
 export function getCustomerContactsListByCustomer(query) {
-  return request({
-    url: '/ecw/customer-contacts/list-by-customer',
-    method: 'get',
-    params: query
-  })
+  if(query.customerId){
+    return request({
+      url: '/ecw/customer-contacts/list-by-customer',
+      method: 'get',
+      params: query
+    })
+  }else {
+    return Promise.resolve()
+  }
 }