Don't output debug on cache lookup failure

diff --git a/framework/Imap_Client/lib/Horde/Imap/Client/Cache.php b/framework/Imap_Client/lib/Horde/Imap/Client/Cache.php
index 9343c56..061ab2e 100644 (file)
--- a/framework/Imap_Client/lib/Horde/Imap/Client/Cache.php
+++ b/framework/Imap_Client/lib/Horde/Imap/Client/Cache.php
@@ -251,7 +251,7 @@ class Horde_Imap_Client_Cache
                 }
             }
 
-            if ($this->_params['debug']) {
+            if ($this->_params['debug'] && !empty($ret_array)) {
                 fwrite($this->_params['debug'], 'Horde_Imap_Client_Cache: Retrieved from cache (mailbox: ' . $mailbox . '; UIDs: ' . implode(',', array_keys($ret_array)) . ")\n");
             }
         }