[5.4] code cleanup

Author: janschoenherr

templates/cassiopeia/offline.php

@@ -111,7 +111,7 @@
             <?php if ($app->get('offline_image')) : ?>
                 <?php echo HTMLHelper::_('image', $app->get('offline_image'), $sitename, [], false, 0); ?>
             <?php endif; ?>
-            <?php if ($app->get('display_offline_message', 1) == 1 && str_replace(' ', '', $app->get('offline_message')) != '') : ?>
+            <?php if ($app->get('display_offline_message', 1) == 1 && trim($app->get('offline_message')) != '') : ?>
                 <p><?php echo $app->get('offline_message'); ?></p>
             <?php elseif ($app->get('display_offline_message', 1) == 2) : ?>
                 <p><?php echo Text::_('JOFFLINE_MESSAGE'); ?></p>