Fix typeahead browse dialog paging

Summary: This accidentally got disabled; we need to pull one more result that we'll use to tell if there's a next page.

Test Plan: Saw "more results" again.

Reviewers: btrahan, chad

Reviewed By: chad

Subscribers: epriestley

Differential Revision: https://secure.phabricator.com/D12461

src/applications/typeahead/controller/PhabricatorTypeaheadModularDatasourceController.php

@@ -50,8 +50,7 @@ final class PhabricatorTypeaheadModularDatasourceController
         ->setViewer($viewer)
         ->setQuery($query)
         ->setRawQuery($raw_query)
-        ->setLimit($limit);
-
+        ->setLimit($limit + 1);
 
       if ($is_browse) {
         if (!$composite->isBrowsable()) {