Apply suggestions from code review

Co-authored-by: Hypolite Petovan <hypolite@mrpetovan.com>

src/Core/Config/Model/Config.php

@@ -32,9 +32,7 @@ use Friendica\Core\Config\ValueObject\Cache;
  */
 class Config implements IManageConfigValues
 {
-	/**
-	 * @var Cache
-	 */
+	/** @var Cache */
 	protected $configCache;
 
 	/** @var ConfigFileManager */

src/Core/Config/Util/ConfigFileManager.php

@@ -401,7 +401,7 @@ class ConfigFileManager
 	private function loadConfigFile(string $filepath): array
 	{
 		if (file_exists($filepath)) {
-			$config = include($filepath);
+			$config = include $filepath;
 
 			if (!is_array($config)) {
 				throw new ConfigFileException('Error loading config file ' . $filepath);

src/Core/Config/ValueObject/Cache.php

@@ -212,13 +212,10 @@ class Cache
 			return null;
 		}
 
-		switch (true) {
-			// manage array value
-			case preg_match("|^a:[0-9]+:{.*}$|s", $value):
-				return unserialize($value);
-
-			default:
-				return $value;
+		if (preg_match("|^a:[0-9]+:{.*}$|s", $value)) {
+			return unserialize($value);
+		} else {
+			return $value;
 		}
 	}