Remove unnecessary empty usages

Author: ostrolucky

AccessToken/Cas/Cas2Handler.php

@@ -74,7 +74,7 @@ private function getValidationUrl(string $accessToken): string
             throw new AuthenticationException('No ticket found in request.');
         }
         unset($query['ticket']);
-        $queryString = empty($query) ? '' : '?'.http_build_query($query);
+        $queryString = $query ? '?'.http_build_query($query) : '';
 
         return sprintf('%s?ticket=%s&service=%s',
             $this->validationUrl,

Firewall/ContextListener.php

@@ -57,7 +57,7 @@ class ContextListener extends AbstractListener
      */
     public function __construct(TokenStorageInterface $tokenStorage, iterable $userProviders, string $contextKey, ?LoggerInterface $logger = null, ?EventDispatcherInterface $dispatcher = null, ?AuthenticationTrustResolverInterface $trustResolver = null, ?callable $sessionTrackerEnabler = null)
     {
-        if (empty($contextKey)) {
+        if (!$contextKey) {
             throw new \InvalidArgumentException('$contextKey must not be empty.');
         }