bug #21930 [Cache] Cached files rely on umask (4rthem)

This PR was merged into the 3.2 branch.

Discussion
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[Cache] Cached files rely on umask

| Q             | A
| ------------- | ---
| Branch?       | 3.2
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #21929
| License       | MIT
| Doc PR        |

Commits
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865a6af153 cached files rely on umask

src/Symfony/Component/Cache/Adapter/PhpArrayAdapter.php

@@ -150,7 +150,7 @@ EOF;
         $tmpFile = uniqid($this->file, true);
 
         file_put_contents($tmpFile, $dump);
-        @chmod($tmpFile, 0666);
+        @chmod($tmpFile, 0666 & ~umask());
         unset($serialized, $unserialized, $value, $dump);
 
         @rename($tmpFile, $this->file);