Fixed typo in filesystem component
bug #4079 Fixed typo in filesystem component (kohkimakimoto)

This PR was merged into the 2.3 branch.

Discussion
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Fixed typo in filesystem component

The `makePathRelative` method returns a path with a slash at end.
See this [test case](https://github.com/symfony/symfony/blob/master/src/Symfony/Component/Filesystem/Tests/FilesystemTest.php#L793).

Commits
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82d2903 Fixed typo in filesystem component