Ticket #18005: 18005-2.diff

wp-includes/theme.php

@@ -1653 +1653 @@
  */
 function get_background_image() {
         $default = defined('BACKGROUND_IMAGE') ? BACKGROUND_IMAGE : '';
-
-        return get_theme_mod('background_image', $default);
+        return set_url_scheme(get_theme_mod('background_image', $default)); 
 }
 
 /**