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-rw-r--r--inc/common.php2
1 files changed, 1 insertions, 1 deletions
diff --git a/inc/common.php b/inc/common.php
index 9fbebde94..c960c8739 100644
--- a/inc/common.php
+++ b/inc/common.php
@@ -796,7 +796,7 @@ function checklock($id) {
//my own lock
@list($ip, $session) = explode("\n", io_readFile($lock));
- if($ip == $INPUT->server->str('REMOTE_USER') || $ip == clientIP() || $session == session_id()) {
+ if($ip == $INPUT->server->str('REMOTE_USER') || $ip == clientIP() || (session_id() && $session == session_id())) {
return false;
}