Fixed non needed checking

Author: reypm

src/GraphQl/Resolver/Stage/SecurityPostDenormalizeStage.php

@@ -57,7 +57,7 @@ public function __invoke(string $resourceClass, string $operationName, array $co
             }
         }
 
-        if (null === $isGranted || null === $this->resourceAccessChecker || $this->resourceAccessChecker->isGranted($resourceClass, (string) $isGranted, $context['extra_variables'])) {
+        if (null === $isGranted || $this->resourceAccessChecker->isGranted($resourceClass, (string) $isGranted, $context['extra_variables'])) {
             return;
         }