[FIX] Skip newsletter to empty email accounts

Author: MPOS123

include/pages/admin/newsletter.inc.php

@@ -20,7 +20,7 @@
       $iSuccess = 0;
       foreach ($user->getAllAssoc() as $aData) {
         $aUserNotificationSettings = $notification->getNotificationSettings($aData['id']);
-        if ($aData['is_locked'] != 0 || $aUserNotificationSettings['newsletter'] != 1) continue;
+        if ($aData['is_locked'] != 0 || $aUserNotificationSettings['newsletter'] != 1 || empty($aData['email']) continue;
         $aData['subject'] = $_REQUEST['data']['subject'];
         $aData['CONTENT'] = $_REQUEST['data']['content'];
         if (!$mail->sendMail('newsletter/body', $aData, true)) {