From 981cd8726d296e941a6a1e913ea7abf2594ada48 Mon Sep 17 00:00:00 2001
From: Aleksander Machniak <alec@alec.pl>
Date: Wed, 7 Mar 2018 09:14:05 +0100
Subject: [PATCH] Remove holes in cache index keys - makes the serialized
 representation shorter

---
 program/lib/Roundcube/rcube_cache.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/program/lib/Roundcube/rcube_cache.php b/program/lib/Roundcube/rcube_cache.php
index a02493b8c02..895b76fb6f6 100644
--- a/program/lib/Roundcube/rcube_cache.php
+++ b/program/lib/Roundcube/rcube_cache.php
@@ -405,7 +405,7 @@ protected function write_index()
             }
         }
 
-        $data = serialize($this->index);
+        $data = serialize(array_values($this->index));
 
         $this->add_item($this->ikey(), $data);
     }