fix dispatch signal event check for compatibility with the contract interface

xabbuh · xabbuh · commit 6a1f0a804e4f · 2022-08-08T09:18:14.000+02:00
diff --git a/src/Symfony/Component/Console/Application.php b/src/Symfony/Component/Console/Application.php
@@ -985,7 +985,7 @@ protected function doRunCommand(Command $command, InputInterface $input, OutputI
 
         if ($this->signalsToDispatchEvent) {
             $commandSignals = $command instanceof SignalableCommandInterface ? $command->getSubscribedSignals() : [];
-            $dispatchSignals = $this->dispatcher && $this->dispatcher->hasListeners(ConsoleEvents::SIGNAL);
+            $dispatchSignals = null !== $this->dispatcher;
 
             if ($commandSignals || $dispatchSignals) {
                 if (!$this->signalRegistry) {
