bug 修复

@@ -174,12 +174,15 @@ func DepartmentEdit(param protocol.RequestDepartmentEdit) error {
 
 	}
 	//更新部门关系数据
-	err = departmentRelationUpdate(departUpdate, newparent)
-	if err != nil {
-		e := fmt.Errorf("departmentRelationUpdate err:%s", err)
-		log.Error(e.Error())
-		return err
+	if departUpdate.ParentId > 0 {
+		err = departmentRelationUpdate(departUpdate, newparent)
+		if err != nil {
+			e := fmt.Errorf("departmentRelationUpdate err:%s", err)
+			log.Error(e.Error())
+			return err
+		}
 	}
+
 	return nil
 }