[Glitch] Fix “load more” button when no data has been fetched

app/javascript/flavours/glitch/components/status_list.js

@@ -55,7 +55,7 @@ export default class StatusList extends ImmutablePureComponent {
   }
 
   handleLoadOlder = debounce(() => {
-    this.props.onLoadMore(this.props.statusIds.last());
+    this.props.onLoadMore(this.props.statusIds.size > 0 ? this.props.statusIds.last() : undefined);
   }, 300, { leading: true })
 
   _selectChild (index) {

app/javascript/flavours/glitch/features/account_gallery/index.js

@@ -67,7 +67,7 @@ export default class AccountGallery extends ImmutablePureComponent {
 
   handleScrollToBottom = () => {
     if (this.props.hasMore) {
-      this.handleLoadMore(this.props.medias.last().getIn(['status', 'id']));
+      this.handleLoadMore(this.props.medias.size > 0 ? this.props.medias.last().getIn(['status', 'id']) : undefined);
     }
   }