fixed warning

git-svn-id: https://svn.code.sf.net/p/squirrelmail/code/trunk/squirrelmail@7584 7612ce4b-ef26-0410-bec9-ea0150e637f0

diff --git a/functions/imap_mailbox.php b/functions/imap_mailbox.php
index e85f6fdeccf02bb9c51e563ba0407ef090f468a7..0a50cf86048938fdfadc32b5cb26c74b872f6640 100755 (executable)
--- a/functions/imap_mailbox.php
+++ b/functions/imap_mailbox.php
@@ -514,7 +514,8 @@ function sqimap_mailbox_option_list($imap_stream, $show_selected = 0, $folder_sk
     }
 
     foreach ($boxes as $boxes_part) {
-        if ($flag == NULL || !in_array($flag, $boxes_part['flags'])) {
+        if ($flag == NULL || (is_array($boxes_part['flags'])
+                      && !in_array($flag, $boxes_part['flags']))) {
             $box = $boxes_part['unformatted'];
 
             if ($folder_skip != 0 && in_array($box, $folder_skip) ) {