bug #271 Fix check.php Error when .ini file not found (gmorel)
bug #271 Fix check.php Error when .ini file not found (gmorel)

This PR was submitted for the master branch but it was merged into the 4.0 branch instead (closes #271).

Discussion
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Fix check.php Error when .ini file not found

Small typo leading to this error:

```
Symfony Requirements Checker

PHP is using the following php.ini file:
PHP Notice:  Undefined index: warning in /var/www/bin/symfony_requirements on line 114
PHP Stack trace:
PHP   1. {main}() /var/www/bin/symfony_requirements:0
PHP   2. echo_style() /var/www/bin/symfony_requirements:16

Notice: Undefined index: warning in /var/www/bin/symfony_requirements on line 114

Call Stack:
    0.0003     322936   1. {main}() /var/www/bin/symfony_requirements:0
    0.0152    1208360   2. echo_style() /var/www/bin/symfony_requirements:16
```

With the fix we have this:

![screenshot from 2016-06-23 17 06 06](https://cloud.githubusercontent.com/assets/2279794/16308340/e937703e-3964-11e6-88e4-f2e382c8acb3.png)

Keep up the good work !

Commits
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e1f9e99 Fix check.php Error when .ini file not found

HeahDude/SensioDistributionBundle,sensiolabs/SensioDistributionBundle,HeahDude/SensioDistributionBundle,sensiolabs/SensioDistributionBundle