[HttpFoundation][Session] memcached connection should not be closed

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

@@ -71,7 +71,7 @@ class MemcacheSessionHandler implements \SessionHandlerInterface
      */
     public function close()
     {
-        return $this->memcache->close();
+        return true;
     }
 
     /**

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

@@ -56,12 +56,6 @@ class MemcacheSessionHandlerTest extends \PHPUnit_Framework_TestCase
 
     public function testCloseSession()
     {
-        $this->memcache
-            ->expects($this->once())
-            ->method('close')
-            ->will($this->returnValue(true))
-        ;
-
         $this->assertTrue($this->storage->close());
     }