Don't display "Loading..." for coverage which will never load

Summary: In very large diffs.

Test Plan:
Display very large diff.
Display normal diff.

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, epriestley

Differential Revision: https://secure.phabricator.com/D1918

src/applications/differential/controller/diffview/DifferentialDiffViewController.php

@@ -105,7 +105,8 @@ final class DifferentialDiffViewController extends DifferentialController {
     $changesets = msort($changesets, 'getSortKey');
 
     $table_of_contents = id(new DifferentialDiffTableOfContentsView())
-      ->setChangesets($changesets);
+      ->setChangesets($changesets)
+      ->setVisibleChangesets($changesets);
 
     $refs = array();
     foreach ($changesets as $changeset) {