修复算例管理. tasks为空时列表渲染出错的问题

zhangzengfei

2021-03-29 24a6b3c3028ed77bb079b2ff76a30179c1db6c51

 src/components/LeftNav.vue

@@ -258,7 +258,7 @@
            </div>

            <!-- 本地视频源列表 -->
            <div class="dev-vedio-list">
            <div class="dev-vedio-list" >
              <!-- 添加文件夹图标 -->
              <div class="tree-edit area-add" v-show="!DataStackPool.readonly">
                <el-tooltip content="添加文件夹" placement="bottom" popper-class="atooltip">