minor #19718 Break switch (tvlooy)

This PR was merged into the 2.7 branch.

Discussion
----------

Break switch

| Q             | A
| ------------- | ---
| Branch?       | 2.7
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets |
| License       | MIT
| Doc PR        |

Commits
-------

f0d02c2 remove duplicate instruction

Author: nicolas-grekas

Tests/Iterator/MockSplFileInfo.php

@@ -95,12 +95,10 @@ public function setType($type)
         if (is_string($type)) {
             switch ($type) {
                 case 'directory':
-                    $this->type = self::TYPE_DIRECTORY;
                 case 'd':
                     $this->type = self::TYPE_DIRECTORY;
                     break;
                 case 'file':
-                    $this->type = self::TYPE_FILE;
                 case 'f':
                     $this->type = self::TYPE_FILE;
                     break;