[代码优化](v2.6)：fix bug

close https://github.com/elunez/eladmin/issues/504

src/components/Permission/permission.js

@@ -1,18 +1,19 @@
 import store from '@/store'
 
 export default {
-  inserted(el, binding, vnode) {
+  inserted(el, binding) {
+    console.log(el, binding)
     const { value } = binding
     const roles = store.getters && store.getters.roles
-    if (value && value instanceof Array && value.length > 0) {
-      const permissionRoles = value
-
-      const hasPermission = roles.some(role => {
-        return permissionRoles.includes(role)
-      })
-
-      if (!hasPermission) {
-        el.parentNode && el.parentNode.removeChild(el)
+    if (value && value instanceof Array) {
+      if (value.length > 0) {
+        const permissionRoles = value
+        const hasPermission = roles.some(role => {
+          return permissionRoles.includes(role)
+        })
+        if (!hasPermission) {
+          el.parentNode && el.parentNode.removeChild(el)
+        }
       }
     } else {
       throw new Error(`使用方式： v-permission="['admin','editor']"`)