fix: call findBoardId with int

Signed-off-by: grnd-alt <git@belakkaf.net>

Author: grnd-alt

lib/Sharing/DeckShareProvider.php

@@ -1023,7 +1023,7 @@ public function getAccessList($nodes, $currentAccess) {
 		while ($row = $cursor->fetch()) {
 			$type = (int)$row['share_type'];
 			if ($type === IShare::TYPE_DECK) {
-				$cardId = $row['share_with'];
+				$cardId = (int)$row['share_with'];
 				$boardId = $this->cardMapper->findBoardId($cardId);
 				if ($boardId === null) {
 					continue;