- Hide PHP warning when max() is used with an empty array

git-svn-id: https://svn.roundcube.net/trunk@5286 208e9e7b-5314-0410-a742-e7e81cd9613c

1 files changed, 1 insertions, 1 deletions

diff --git a/roundcubemail/program/include/rcube_imap_cache.php b/roundcubemail/program/include/rcube_imap_cache.php
index 8ef5b71cb..b51bc6db9 100644
--- a/roundcubemail/program/include/rcube_imap_cache.php
+++ b/roundcubemail/program/include/rcube_imap_cache.php
@@ -853,7 +853,7 @@ class rcube_imap_cache
         // @TODO: find better validity check for threaded index
         if ($is_thread) {
             // check messages number...
-            if ($mbox_data['EXISTS'] != max(array_keys($index['depth']))) {
+            if ($mbox_data['EXISTS'] != @max(array_keys($index['depth']))) {
                 return false;
             }
             return true;