[WebProfilerBundle] fix FC with HttpFoundation v5

Author: nicolas-grekas

src/Symfony/Bundle/WebProfilerBundle/Controller/ProfilerController.php

@@ -140,9 +140,7 @@ public function toolbarAction(Request $request, $token)
             throw new NotFoundHttpException('The profiler must be enabled.');
         }
 
-        $session = $request->getSession();
-
-        if (null !== $session && $session->isStarted() && $session->getFlashBag() instanceof AutoExpireFlashBag) {
+        if ($request->hasSession() && ($session = $request->getSession()) && $session->isStarted() && $session->getFlashBag() instanceof AutoExpireFlashBag) {
             // keep current flashes for one more request if using AutoExpireFlashBag
             $session->getFlashBag()->setAll($session->getFlashBag()->peekAll());
         }
@@ -199,7 +197,7 @@ public function searchBarAction(Request $request)
             $this->cspHandler->disableCsp();
         }
 
-        if (null === $session = $request->getSession()) {
+        if (!$request->hasSession()) {
             $ip =
             $method =
             $statusCode =
@@ -209,6 +207,8 @@ public function searchBarAction(Request $request)
             $limit =
             $token = null;
         } else {
+            $session = $request->getSession();
+
             $ip = $request->query->get('ip', $session->get('_profiler_search_ip'));
             $method = $request->query->get('method', $session->get('_profiler_search_method'));
             $statusCode = $request->query->get('status_code', $session->get('_profiler_search_status_code'));
@@ -308,7 +308,9 @@ public function searchAction(Request $request)
         $limit = $request->query->get('limit');
         $token = $request->query->get('token');
 
-        if (null !== $session = $request->getSession()) {
+        if ($request->hasSession()) {
+            $session = $request->getSession();
+
             $session->set('_profiler_search_ip', $ip);
             $session->set('_profiler_search_method', $method);
             $session->set('_profiler_search_status_code', $statusCode);