[6.0] cs fixes

Author: nicolas-grekas

DataCollector/ExceptionDataCollector.php

@@ -47,9 +47,6 @@ public function hasException(): bool
         return isset($this->data['exception']);
     }
 
-    /**
-     * @return \Exception|FlattenException
-     */
     public function getException(): \Exception|FlattenException
     {
         return $this->data['exception'];

EventListener/DebugHandlersListener.php

@@ -55,7 +55,7 @@ public function __construct(callable $exceptionHandler = null, LoggerInterface $
         $this->earlyHandler = \is_array($handler) ? $handler[0] : null;
         restore_exception_handler();
 
-        $this->exceptionHandler = $exceptionHandler === null || $exceptionHandler instanceof \Closure ? $exceptionHandler : \Closure::fromCallable($exceptionHandler);
+        $this->exceptionHandler = null === $exceptionHandler || $exceptionHandler instanceof \Closure ? $exceptionHandler : \Closure::fromCallable($exceptionHandler);
         $this->logger = $logger;
         $this->levels = $levels ?? \E_ALL;
         $this->throwAt = \is_int($throwAt) ? $throwAt : (null === $throwAt ? null : ($throwAt ? \E_ALL : null));