From c509e80a74f1af230dcafff7e600c87c9f5d09dd Mon Sep 17 00:00:00 2001
From: epriestley <git@epriestley.com>
Date: Tue, 21 Apr 2015 15:38:52 -0700
Subject: [PATCH] Fix an issue where versus diffs tried to load invalid
 changeset IDs

Auditors: btrahan
---
 .../differential/storage/DifferentialRevision.php             | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/applications/differential/storage/DifferentialRevision.php b/src/applications/differential/storage/DifferentialRevision.php
index de8e08dcdc..77afebd278 100644
--- a/src/applications/differential/storage/DifferentialRevision.php
+++ b/src/applications/differential/storage/DifferentialRevision.php
@@ -494,8 +494,8 @@ final class DifferentialRevision extends DifferentialDAO
 
     $old_ids = $request->getStr('old', idx($render_data, 'old'));
     $new_ids = $request->getStr('new', idx($render_data, 'new'));
-    $old_ids = explode(',', $old_ids);
-    $new_ids = explode(',', $new_ids);
+    $old_ids = array_filter(explode(',', $old_ids));
+    $new_ids = array_filter(explode(',', $new_ids));
 
     $type_inline = DifferentialTransaction::TYPE_INLINE;
     $changeset_ids = array_merge($old_ids, $new_ids);