fixup! fix(caldav): prevent unshare entry creation for owner unsharing

Signed-off-by: Daniel Kesselberg <mail@danielkesselberg.de>

Author: kesselb

apps/dav/lib/CalDAV/CalDavBackend.php

@@ -88,6 +88,18 @@
  * Code is heavily inspired by https://github.com/fruux/sabre-dav/blob/master/lib/CalDAV/Backend/PDO.php
  *
  * @package OCA\DAV\CalDAV
+ *
+ * @psalm-type CalendarInfo = array{
+ *     id: int,
+ *     uri: string,
+ *     principaluri: string,
+ *     '{http://calendarserver.org/ns/}getctag': string,
+ *     '{http://sabredav.org/ns}sync-token': int,
+ *     '{urn:ietf:params:xml:ns:caldav}supported-calendar-component-set': SupportedCalendarComponentSet,
+ *     '{urn:ietf:params:xml:ns:caldav}schedule-calendar-transp': ScheduleCalendarTransp,
+ *     '{DAV:}displayname': string,
+ *     '{urn:ietf:params:xml:ns:caldav}calendar-timezone': ?string }
+ * }
  */
 class CalDavBackend extends AbstractBackend implements SyncSupport, SubscriptionSupport, SchedulingSupport {
 	use TTransactional;
@@ -649,7 +661,8 @@ public function getCalendarByUri($principal, $uri) {
 	}
 
 	/**
-	 * @return array{id: int, uri: string, '{http://calendarserver.org/ns/}getctag': string, '{http://sabredav.org/ns}sync-token': int, '{urn:ietf:params:xml:ns:caldav}supported-calendar-component-set': SupportedCalendarComponentSet, '{urn:ietf:params:xml:ns:caldav}schedule-calendar-transp': ScheduleCalendarTransp, '{urn:ietf:params:xml:ns:caldav}calendar-timezone': ?string }|null
+	 * @psalm-return CalendarInfo|null
+	 * @return array|null
 	 */
 	public function getCalendarById(int $calendarId): ?array {
 		$fields = array_column($this->propertyMap, 0);