add 'rewrite_subject' field to select query for rspamd config

Signed-off-by: Michael Kaufmann <d00p@froxlor.org>

lib/Froxlor/Cron/Mail/Rspamd.php

@@ -55,7 +55,7 @@ public function writeConfigs()
 
 		// get all email addresses
 		$antispam_stmt = Database::prepare("
-			SELECT email, spam_tag_level, spam_kill_level, bypass_spam, policy_greylist, iscatchall
+			SELECT email, spam_tag_level, rewrite_subject, spam_kill_level, bypass_spam, policy_greylist, iscatchall
 			FROM `" . TABLE_MAIL_VIRTUAL . "`
 			ORDER BY email
 		");