style: fix code style

Author: lihsai0

tests/Qiniu/Tests/PfopTest.php

@@ -6,6 +6,7 @@
 use Qiniu\Auth;
 use Qiniu\Processing\PersistentFop;
 use Qiniu\Storage\UploadManager;
+
 //use Qiniu\Region;
 //use Qiniu\Config;