优化 index-tree.vue.vm 文件，undefined 修改为 null

fungleo

2020-07-26 ca657b048275fbac4fd13e3c26808ad20e8ea128

 ruoyi-ui/src/views/system/dict/data.vue

@@ -305,8 +305,6 @@
                this.msgSuccess("修改成功");

                this.open = false;

                this.getList();

              } else {

                this.msgError(response.msg);

              }

            });

          } else {

@@ -315,8 +313,6 @@
                this.msgSuccess("新增成功");

                this.open = false;

                this.getList();

              } else {

                this.msgError(response.msg);

              }

            });

          }