type fixes

Author: dg

src/Caching/OutputHelper.php

@@ -20,7 +20,7 @@ class OutputHelper
 	/** @var array */
 	public $dependencies;
 
-	/** @var Cache */
+	/** @var Cache|null */
 	private $cache;
 
 	/** @var string */

src/Caching/Storages/FileStorage.php

@@ -100,7 +100,7 @@ public function read($key)
 	 * @param  array
 	 * @return bool
 	 */
-	private function verify($meta)
+	private function verify(array $meta)
 	{
 		do {
 			if (!empty($meta[self::META_DELTA])) {
@@ -354,7 +354,7 @@ protected function readMetaAndLock($file, $lock)
 	 * @param  array
 	 * @return mixed
 	 */
-	protected function readData($meta)
+	protected function readData(array $meta)
 	{
 		$data = stream_get_contents($meta[self::HANDLE]);
 		flock($meta[self::HANDLE], LOCK_UN);