[Bugfix] MemcachedSessionHandler::close() must close connection

src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MemcachedSessionHandler.php

@@ -62,7 +62,7 @@ class MemcachedSessionHandler extends AbstractSessionHandler
      */
     public function close()
     {
-        return true;
+        return $this->memcached->quit();
     }
 
     /**

src/Symfony/Component/HttpFoundation/Tests/Session/Storage/Handler/MemcachedSessionHandlerTest.php

@@ -63,6 +63,12 @@ class MemcachedSessionHandlerTest extends TestCase
 
     public function testCloseSession()
     {
+        $this->memcached
+            ->expects($this->once())
+            ->method('quit')
+            ->will($this->returnValue(true))
+        ;
+
         $this->assertTrue($this->storage->close());
     }