Command must return with integer

[szhajdu]

> ./vendor/bin/companienv
PHP Fatal error:  Uncaught TypeError: Return value of "class@anonymous in /home/sabee/test/vendor/symfony/console/Command/Command.php:261
Stack trace:
#0 /home/sabee/test/vendor/symfony/console/Application.php(916): Symfony\Component\Console\Command\Command->run(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#1 /home/sabee/test/vendor/symfony/console/Application.php(264): Symfony\Component\Console\Application->doRunCommand(Object(class@anonymous), Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#2 /home/sabee/test/vendor/symfony/console/Application.php(140): Symfony\Component\Console\Application->doRun(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#3 /home/sabee/test/vendor/sroze/companienv/bin/companienv(26): Symfony\Component\Console\Applic in /home/sabee/test/vendor/symfony/console/Command/Command.php on line 261

Fatal error: Uncaught TypeError: Return value of "class@anonymous in /home/sabee/test/vendor/symfony/console/Command/Command.php on line 261

TypeError: Return value of "class@anonymous in /home/sabee/test/vendor/symfony/console/Command/Command.php on line 261

Call Stack:
    0.0003     394848   1. {main}() /home/sabee/test/vendor/sroze/companienv/bin/companienv:0
    0.0261    2206296   2. Companienv\Application->run() /home/sabee/test/vendor/sroze/companienv/bin/companienv:26
    0.0467    2542272   3. Companienv\Application->doRun() /home/sabee/test/vendor/symfony/console/Application.php:140
    0.0481    2553928   4. Companienv\Application->doRunCommand() /home/sabee/test/vendor/symfony/console/Application.php:264
    0.0481    2553928   5. class@anonymous->run() /home/sabee/test/vendor/symfony/console/Application.php:916

symfony/console version is 5.1

Since symfony/console:5.0.0 a command must return with integer, otherwise application will throw TypeError.

https://github.com/symfony/console/blob/5.0/CHANGELOG.md

Based on this, Companienv\Application::run must return 0 if everything went fine, but Companienv\Companion::fillGaps returns with void.

companienv/src/Companienv/Application.php

Line 50 in 966c0a2

return $callable($input, $output);