RANGER-4584: UI fix in rendering tag-based policy for EXPIRES_ON

Signed-off-by: Madhan Neethiraj <madhan@apache.org>
diff --git a/security-admin/src/main/webapp/scripts/views/policies/PermissionList.js b/security-admin/src/main/webapp/scripts/views/policies/PermissionList.js
index cd3730b..dbcd3b8 100644
--- a/security-admin/src/main/webapp/scripts/views/policies/PermissionList.js
+++ b/security-admin/src/main/webapp/scripts/views/policies/PermissionList.js
@@ -162,7 +162,9 @@
 				_.each(this.model.get('accesses'), function(p){
 					if(p.isAllowed){
 						var access = _.find(that.accessTypes,function(obj){if(obj.name == p.type) return obj});
-						this.permsIds.push(access.name);
+						if(access !== undefined){
+							this.permsIds.push(access.name);
+						}
 					}
 					
 				}, this);