diff options
Diffstat (limited to 'lib/private/Preview/Generator.php')
| -rw-r--r-- | lib/private/Preview/Generator.php | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/private/Preview/Generator.php b/lib/private/Preview/Generator.php index 4a1270fa4a6..d936f1d65ad 100644 --- a/lib/private/Preview/Generator.php +++ b/lib/private/Preview/Generator.php @@ -244,7 +244,7 @@ class Generator { * @return bool */ public static function unguardWithSemaphore($semId): bool { - if (!is_resource($semId) || !extension_loaded('sysvsem')) { + if ($semId === false || get_class($semId) !== 'SysvSemaphore' || !extension_loaded('sysvsem')) { return false; } return sem_release($semId); |