Fixed return value of list and help commands

Author: Valentin Clavreul

Command/ListProcessCommand.php

@@ -103,6 +103,8 @@ protected function execute(InputInterface $input, OutputInterface $output)
         foreach ($outputMessages as $message) {
             $output->writeln($message);
         }
+
+        return 0;
     }
 
     /**

Command/ProcessHelpCommand.php

@@ -148,6 +148,8 @@ static function ($task) use ($nextTaskCode) {
             $branchStr = '['.implode(', ', $branches).']';
             $output->writeln("<error>All branches are not resolved : {$branchStr}</error>");
         }
+
+        return 0;
     }
 
     /**

Documentation/changelog/CHANGELOG-3.2.md

@@ -10,7 +10,7 @@ _Nothing yet_
 
 ### Fixes
 
-_Nothing yet_
+* Fixed return value of list and help commands (mandatory for Symfony 5)
 
 ### BC breaks