[TASk] Smaller corrections regarding the mail queue

Classes/Command/SendMailCommandController.php

@@ -70,10 +70,10 @@ class SendMailCommandController extends CommandController {
 			$mailToSend->setSendingTime(time());
 			$mailToSend->setLastSendingTime(time());
 
-			$this->mailRepository->update($mailToSend);
-			if (empty($fromAddress) || empty($toAddress) || empty($mailSubject)) {
+			if (empty($fromAddress) || empty($toAddress)) {
 				continue;
 			}
+			$this->mailRepository->update($mailToSend);
 
 			$mailMessage = $this->objectManager->get(MailMessage::class);
 			$mailMessage->setFrom($fromAddress, $mailToSend->getFromName());

Classes/Domain/Repository/MailRepository.php

@@ -51,7 +51,7 @@ class MailRepository extends AbstractRepository {
 
 		$query->setOrderings(['priority' => Query::ORDER_DESCENDING]);
 
-		return $query->matching($query->equals('sent', FALSE))->execute();
+		return $query->matching($query->equals('sending_time', 0))->execute();
 	}
 
 	/**

Classes/Service/BackendService.php

@@ -137,7 +137,7 @@ class BackendService {
 		$siteRoot = ['uid' => 0];
 
 		foreach ($rootLine as $page) {
-			if ($page['is_siteroot'] === '1') {
+			if ((int) $page['is_siteroot'] === 1) {
 				$siteRoot = $page;
 				break;
 			}