symfony/symfony — pull request #12072 by unkind (2014-09-28 18:34:14+00:00)
Title: [DependencyInjection] Removed unreachable code

| Q | A
| ------------- | ---
| Bug fix? | not really
| New feature? | no
| BC breaks? | no
| Deprecations? | no
| Tests pass? | yes
| Fixed tickets | n/a
| License | MIT
| Doc PR | n/a

According to undefined $e, this is an unreachable code. As I can see, circular references are handled by parent method.