fix old shares

Signed-off-by: Maxence Lange <maxence@artificial-owl.com>

Author: ArtificialOwl

appinfo/info.xml

@@ -47,6 +47,7 @@ Users won't be able to find this Circle using Nextcloud search engine.
 	</dependencies>
 
 	<background-jobs>
+		<job>OCA\Circles\Cron\Maintenance</job>
 		<job>OCA\Circles\Cron\ContactsExistingShares</job>
 		<job>OCA\Circles\Cron\GlobalSync</job>
 	</background-jobs>

lib/Db/SharesRequest.php

@@ -102,7 +102,10 @@ public function getSharesForCircle(string $circleId) {
 	public function getShares(): array {
 		$qb = $this->getSharesSelectSql();
 
+		$expr = $qb->expr();
+
 		$this->limitToShareType($qb, self::SHARE_TYPE);
+		$qb->andWhere($expr->isNull($this->default_select_alias . '.parent'));
 
 		$shares = [];
 		$cursor = $qb->execute();