fixed render function wrongly removed from industriel newsletter template

sites/all/themes/gui/materiobasetheme/templates/simplenews-newsletter-body--7881.tpl.php

@@ -0,0 +1,31 @@
+<?php
+
+/**
+ * @file
+ * Default theme implementation to format the simplenews newsletter body.
+ *
+ * Copy this file in your theme directory to create a custom themed body.
+ * Rename it to override it. Available templates:
+ *   simplenews-newsletter-body--[tid].tpl.php
+ *   simplenews-newsletter-body--[view mode].tpl.php
+ *   simplenews-newsletter-body--[tid]--[view mode].tpl.php
+ * See README.txt for more details.
+ *
+ * Available variables:
+ * - $build: Array as expected by render()
+ * - $build['#node']: The $node object
+ * - $title: Node title
+ * - $language: Language code
+ * - $view_mode: Active view mode
+ * - $simplenews_theme: Contains the path to the configured mail theme.
+ * - $simplenews_subscriber: The subscriber for which the newsletter is built.
+ *   Note that depending on the used caching strategy, the generated body might
+ *   be used for multiple subscribers. If you created personalized newsletters
+ *   and can't use tokens for that, make sure to disable caching or write a
+ *   custom caching strategy implemention.
+ *
+ * @see template_preprocess_simplenews_newsletter_body()
+ */
+?>
+<!-- node content -->
+<?php print render($build); ?>