Add more nullsafe operators

Author: nicolas-grekas

DataCollector/RequestDataCollector.php

@@ -110,7 +110,7 @@ public function collect(Request $request, Response $response, \Throwable $except
             'session_metadata' => $sessionMetadata,
             'session_attributes' => $sessionAttributes,
             'session_usages' => array_values($this->sessionUsages),
-            'stateless_check' => $this->requestStack && $this->requestStack->getMainRequest()->attributes->get('_stateless', false),
+            'stateless_check' => $this->requestStack?->getMainRequest()->attributes->get('_stateless') ?? false,
             'flashes' => $flashes,
             'path_info' => $request->getPathInfo(),
             'controller' => 'n/a',

EventListener/AbstractSessionListener.php

@@ -209,11 +209,11 @@ public function onSessionUsage(): void
             return;
         }
 
-        if ($this->container && $this->container->has('session_collector')) {
+        if ($this->container?->has('session_collector')) {
             $this->container->get('session_collector')();
         }
 
-        if (!$requestStack = $this->container && $this->container->has('request_stack') ? $this->container->get('request_stack') : null) {
+        if (!$requestStack = $this->container?->has('request_stack') ? $this->container->get('request_stack') : null) {
             return;
         }
 

HttpCache/HttpCache.php

@@ -633,7 +633,7 @@ private function restoreResponseBody(Request $request, Response $response)
 
     protected function processResponseBody(Request $request, Response $response)
     {
-        if (null !== $this->surrogate && $this->surrogate->needsParsing($response)) {
+        if ($this->surrogate?->needsParsing($response)) {
             $this->surrogate->process($request, $response);
         }
     }