Refactor start/endComputation into lazyRedraw method

js/forum/src/components/DiscussionList.js

@@ -179,12 +179,7 @@ export default class DiscussionList extends Component {
     this.loading = false;
     this.moreResults = !!results.payload.links.next;
 
-    // Since this may be called during the component's constructor, i.e. in the
-    // middle of a redraw, forcing another redraw would not bode well. Instead
-    // we start/end a computation so Mithril will only redraw if it isn't
-    // already doing so.
-    m.startComputation();
-    m.endComputation();
+    m.lazyRedraw();
 
     return results;
   }