Bug: Exception for deleted sites?

[kitzberger]

Exception when calling ./typo3 solrcommands:cleanupindex for any deleted site root pages. There might be a try catch block missing?

The rootPageRecord for the given rootPageRecord ID '10487' could not be found in the database and can therefore not be used as site root rootPageRecord.

Exception trace:
  at /var/www/private/typo3conf/ext/solr/Classes/Domain/Site/SiteRepository.php:217
 ApacheSolrForTypo3\Solr\Domain\Site\SiteRepository->buildSite() at /var/www/private/typo3conf/ext/solr/Classes/Domain/Site/SiteRepository.php:133
 ApacheSolrForTypo3\Solr\Domain\Site\SiteRepository->getSiteByRootPageId() at /var/www/private/typo3conf/ext/solr/Classes/Domain/Site/SiteRepository.php:114
 ApacheSolrForTypo3\Solr\Domain\Site\SiteRepository->getSiteByPageId() at /var/www/private/typo3conf/ext/solr_commands/Classes/Command/CleanupIndexCommand.php:35
 Networkteam\SolrCommands\Command\CleanupIndexCommand->execute() at /var/www/vendor/symfony/console/Command/Command.php:298
 Symfony\Component\Console\Command\Command->run() at /var/www/vendor/symfony/console/Application.php:1058
 Symfony\Component\Console\Application->doRunCommand() at /var/www/vendor/symfony/console/Application.php:301
 Symfony\Component\Console\Application->doRun() at /var/www/vendor/symfony/console/Application.php:171
 Symfony\Component\Console\Application->run() at /var/www/private/typo3/sysext/core/Classes/Console/CommandApplication.php:114
 TYPO3\CMS\Core\Console\CommandApplication->run() at /var/www/vendor/typo3/cms-cli/typo3:23
 {closure}() at /var/www/vendor/typo3/cms-cli/typo3:24
 include() at /var/www/bin/typo3:119

[christophlehmann]

Accepted. Do you want to create a PR?