Revert "Issue #2853509 by alexpott: Don't render status messages if there are no messages"

This reverts commit 78ca5677.

core/lib/Drupal/Core/Render/Element/StatusMessages.php

@@ -73,22 +73,17 @@ public static function generatePlaceholder(array $element) {
    * @see drupal_get_messages()
    */
   public static function renderMessages($type) {
-    $render = [];
-    $messages = drupal_get_messages($type);
-    if ($messages) {
-      // Render the messages.
-      $render = [
-        '#theme' => 'status_messages',
-        // @todo Improve when https://www.drupal.org/node/2278383 lands.
-        '#message_list' => $messages,
-        '#status_headings' => [
-          'status' => t('Status message'),
-          'error' => t('Error message'),
-          'warning' => t('Warning message'),
-        ],
-      ];
-    }
-    return $render;
+    // Render the messages.
+    return [
+      '#theme' => 'status_messages',
+      // @todo Improve when https://www.drupal.org/node/2278383 lands.
+      '#message_list' => drupal_get_messages($type),
+      '#status_headings' => [
+        'status' => t('Status message'),
+        'error' => t('Error message'),
+        'warning' => t('Warning message'),
+      ],
+    ];
   }
 
 }