linkEditable bug fix

src/components/editable/LinkEditable.vue

@@ -44,8 +44,10 @@ export default {
   },
   updated() {
     console.log('LinkEditable updated', this.links, this.$refs.links_list);
-    this.$refs.links_list.lastChild.querySelector('input.new.title').value = null;
-    this.$refs.links_list.lastChild.querySelector('input.new.url').value = null;
+    if (this.$refs.links_list.lastElementChild) {
+      this.$refs.links_list.lastElementChild.querySelector('input.new.title').value = null;
+      this.$refs.links_list.lastElementChild.querySelector('input.new.url').value = null;
+    }
   },
   mounted () {