In Custom_Image_Header:

* In `->process_default_headers()`, remove check on non-existent `$headers` property. Introduced in [13403]. 
* Declare `$updated` as a property.

See #30224.

Built from https://develop.svn.wordpress.org/trunk@30187


git-svn-id: http://core.svn.wordpress.org/trunk@30187 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/custom-header.php

@@ -60,6 +60,11 @@ class Custom_Image_Header {
 	 */
 	private $page = '';
 
+	/**
+	 * @var bool
+	 */
+	private $updated;
+
 	/**
 	 * Constructor - Register administration header callback.
 	 *
@@ -300,9 +305,6 @@ class Custom_Image_Header {
 	public function process_default_headers() {
 		global $_wp_default_headers;
 
-		if ( !empty($this->headers) )
-			return;
-
 		if ( !isset($_wp_default_headers) )
 			return;