fix(updatenotification): Resolve static code analysis errors

Signed-off-by: Ferdinand Thiessen <opensource@fthiessen.de>

apps/updatenotification/lib/BackgroundJob/ResetToken.php

@@ -55,7 +55,7 @@ class ResetToken extends TimedJob {
 	 * @param $argument
 	 */
 	protected function run($argument) {
-		if ($this->config->getSystemValueBool('config_is_read_only') !== false) {
+		if ($this->config->getSystemValueBool('config_is_read_only')) {
 			return;
 		}
 

apps/updatenotification/lib/BackgroundJob/UpdateAvailableNotifications.php

@@ -171,7 +171,7 @@ class UpdateAvailableNotifications extends TimedJob {
 			return;
 		}
 
-		if ($lastNotification !== false) {
+		if ($lastNotification !== '') {
 			// Delete old updates
 			$this->deleteOutdatedNotifications($app, $lastNotification);
 		}
@@ -213,14 +213,12 @@ class UpdateAvailableNotifications extends TimedJob {
 			$groupToNotify = $this->groupManager->get($group);
 			if ($groupToNotify instanceof IGroup) {
 				foreach ($groupToNotify->getUsers() as $user) {
-					$this->users[$user->getUID()] = true;
+					$this->users[] = $user->getUID();
 				}
 			}
 		}
 
-		$this->users = array_keys($this->users);
-
-		return $this->users;
+		return array_unique($this->users);
 	}
 
 	/**

apps/updatenotification/lib/Notification/Notifier.php

@@ -133,14 +133,13 @@ class Notifier implements INotifier {
 				$this->updateAlreadyInstalledCheck($notification, $this->getCoreVersions());
 
 				$parameters = $notification->getSubjectParameters();
-				$notification->setParsedSubject($l->t('Update to %1$s is available.', [$parameters['version']]))
-					->setRichSubject($l->t('Update to {serverAndVersion} is available.'), [
-						'serverAndVersion' => [
-							'type' => 'highlight',
-							'id' => $notification->getObjectType(),
-							'name' => $parameters['version'],
-						]
-					]);
+				$notification->setRichSubject($l->t('Update to {serverAndVersion} is available.'), [
+					'serverAndVersion' => [
+						'type' => 'highlight',
+						'id' => $notification->getObjectType(),
+						'name' => $parameters['version'],
+					]
+				]);
 
 				if ($this->isAdmin()) {
 					$notification->setLink($this->url->linkToRouteAbsolute('settings.AdminSettings.index', ['section' => 'overview']) . '#version');