[2.3] CS Fixes

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | N/A
| License       | MIT
| Doc PR        | N/A

##### This pull request provides some cs fixes.
@fabpot I've actually just written that short description fixer now. :) I'll try it out on the symfony code base, and update this pull if it works.