去除多余引用，修正个别错误

lawrencehj

2021-04-13 8b4f7095e2e850cccd9b7bb00703163c08d31bbe

 web_src/src/components/UiHeader.vue

@@ -71,6 +71,10 @@
    },
    destroyed() {
        window.removeEventListener('beforeunload', e => this.beforeunloadHandler(e))
        this.sseSource.removeEventListener('open', null);
        this.sseSource.removeEventListener('message', null);
        this.sseSource.removeEventListener('error', null);
        this.sseSource.close();
        // window.removeEventListener('unload', e => this.unloadHandler(e))
    },
 }