merged branch jmikola/2.0-LoaderResolverInterface (PR #2785)

Commits
-------

7c1cbb9 [Config] Use LoaderResolverInterface for type-hinting
48b084e fixed typo
8ad94fb merged branch hhamon/doctrine_bridge_cs (PR #2775)
240796e [Bridge] [Doctrine] fixed coding conventions.
7cfc392 check for session before trying to authentication details
648fae7 merged branch proofek/domcrawlerform-radiodisabled (PR #2768)
3976b7a [DoctrineBridge] fixed CS
9a04783 merged branch beberlei/SecurityEntityRepositoryIdentifierFix (PR #2765)
3c83b89 [DoctrineBridge] Catch user-error when the identifier is not serialized with the User entity.
36c7d03 Fixed GH-2720 - Fix disabled atrribute handling for radio form elements

Discussion
----------

[Config] Use LoaderResolverInterface for type-hinting

```
Bug fix: no
Feature addition: no
Backwards compatibility break: yes
Symfony2 tests pass: yes
Fixes the following tickets: -
```

I've listed this as a BC break because we're changing the argument type-hint, but I think it's unlikely to affect anyone.

1 files changed, 4 insertions, 0 deletions

diff --git a/Http/Firewall/ContextListener.php b/Http/Firewall/ContextListener.php
index bf3cba6..865cc04 100644
--- a/Http/Firewall/ContextListener.php
+++ b/Http/Firewall/ContextListener.php
@@ -91,6 +91,10 @@ class ContextListener implements ListenerInterface
         if (HttpKernelInterface::MASTER_REQUEST !== $event->getRequestType()) {
             return;
         }
+        
+        if (!$event->getRequest()->hasSession()) {
+            return;
+        }
 
         if (null !== $this->logger) {
             $this->logger->debug('Write SecurityContext in the session');