fix type hints

Signed-off-by: Robin Appelman <robin@icewind.nl>

Author: icewind1991

lib/private/Files/Cache/Cache.php

@@ -865,7 +865,7 @@ public function getIncompleteChildrenCount($fileId) {
 	 * calculate the size of a folder and set it in the cache
 	 *
 	 * @param string $path
-	 * @param array $entry (optional) meta data of the folder
+	 * @param array|null|ICacheEntry $entry (optional) meta data of the folder
 	 * @param bool $ignoreUnknown don't mark the folder size as unknown if any of it's children are unknown
 	 * @return int
 	 */
@@ -878,11 +878,11 @@ public function calculateFolderSize($path, $entry = null) {
 	 * inner function because we can't add new params to the public function without breaking any child classes
 	 *
 	 * @param string $path
-	 * @param array $entry (optional) meta data of the folder
+	 * @param array|null|ICacheEntry $entry (optional) meta data of the folder
 	 * @param bool $ignoreUnknown don't mark the folder size as unknown if any of it's children are unknown
 	 * @return int
 	 */
-	protected function calculateFolderSizeInner(string $path, array $entry = null, bool $ignoreUnknown = false) {
+	protected function calculateFolderSizeInner(string $path, $entry = null, bool $ignoreUnknown = false) {
 		$totalSize = 0;
 		if (is_null($entry) || !isset($entry['fileid'])) {
 			$entry = $this->get($path);