Remove Redundantcasts

For #25839

Signed-off-by: Roeland Jago Douma <roeland@famdouma.nl>

lib/private/DB/QueryBuilder/QueryBuilder.php

@@ -1234,11 +1234,11 @@ class QueryBuilder implements IQueryBuilder {
 	 * @return int
 	 * @throws \BadMethodCallException When being called before an insert query has been run.
 	 */
-	public function getLastInsertId() {
+	public function getLastInsertId(): int {
 		if ($this->getType() === \Doctrine\DBAL\Query\QueryBuilder::INSERT && $this->lastInsertedTable) {
 			// lastInsertId() needs the prefix but no quotes
 			$table = $this->prefixTableName($this->lastInsertedTable);
-			return (int) $this->connection->lastInsertId($table);
+			return $this->connection->lastInsertId($table);
 		}
 
 		throw new \BadMethodCallException('Invalid call to getLastInsertId without using insert() before.');

lib/private/Files/Cache/Storage.php

@@ -77,7 +77,7 @@ class Storage {
 			$connection = \OC::$server->getDatabaseConnection();
 			$available = $isAvailable ? 1 : 0;
 			if ($connection->insertIfNotExist('*PREFIX*storages', ['id' => $this->storageId, 'available' => $available])) {
-				$this->numericId = (int)$connection->lastInsertId('*PREFIX*storages');
+				$this->numericId = $connection->lastInsertId('*PREFIX*storages');
 			} else {
 				if ($row = self::getStorageById($this->storageId)) {
 					$this->numericId = (int)$row['numeric_id'];

lib/public/DB/QueryBuilder/IQueryBuilder.php

@@ -967,7 +967,7 @@ interface IQueryBuilder {
 	 * @throws \BadMethodCallException When being called before an insert query has been run.
 	 * @since 9.0.0
 	 */
-	public function getLastInsertId();
+	public function getLastInsertId(): int;
 
 	/**
 	 * Returns the table name quoted and with database prefix as needed by the implementation