Make sure ResetTokenBackgroundJob doesn't execute if config is read-only

No need to try to delete the config key in config.php if we aren't
allowed to.

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

1 files changed, 1 insertions, 1 deletions

diff --git a/apps/updatenotification/lib/ResetTokenBackgroundJob.php b/apps/updatenotification/lib/ResetTokenBackgroundJob.php
index 96a50c5ff7f..0d07c7301d9 100644
--- a/apps/updatenotification/lib/ResetTokenBackgroundJob.php
+++ b/apps/updatenotification/lib/ResetTokenBackgroundJob.php
@@ -59,7 +59,7 @@ class ResetTokenBackgroundJob extends TimedJob {
 	 */
 	protected function run($argument) {
 		// Delete old tokens after 2 days
-		if ($this->timeFactory->getTime() - $this->config->getAppValue('core', 'updater.secret.created', $this->timeFactory->getTime()) >= 172800) {
+		if ($this->config->getSystemValueBool('config_is_read_only') === false && $this->timeFactory->getTime() - (int) $this->config->getAppValue('core', 'updater.secret.created', (string) $this->timeFactory->getTime()) >= 172800) {
 			$this->config->deleteSystemValue('updater.secret');
 		}
 	}