Ticket #18005: 18005.diff

wp-includes/theme.php

@@ -1654 +1654 @@
 function get_background_image() {
         $default = defined('BACKGROUND_IMAGE') ? BACKGROUND_IMAGE : '';
 
-        return get_theme_mod('background_image', $default);
+        $url = get_theme_mod('background_image', $default);
+        if ( is_ssl() ) {
+                $url = str_replace( 'http://', 'https://', $url );
+        } else {
+                $url = str_replace( 'https://', 'http://', $url );
+        }
+        return $url;
 }
 
 /**