Fix crash on public hashtag pages when streaming fails (#10061)

app/javascript/mastodon/features/status/components/detailed_status.js

@@ -86,7 +86,7 @@ export default class DetailedStatus extends ImmutablePureComponent {
   }
 
   render () {
-    const status = this.props.status.get('reblog') ? this.props.status.get('reblog') : this.props.status;
+    const status = (this.props.status && this.props.status.get('reblog')) ? this.props.status.get('reblog') : this.props.status;
     const outerStyle = { boxSizing: 'border-box' };
     const { compact } = this.props;