Ticket #12467: 12467.patch

wp-includes/theme.php

@@ -1681 +1681 @@
                 require ( $include );
 }
 
+/**
+ * Checks an attachment, if it's a header or background image. If true remove the theme modification.
+ *
+ * @since 3.0.0
+ * @param int $id the attachment id
+ */
+function _delete_attachment_theme_mod( $id ) {
+        $attachment_image = wp_get_attachment_url( $id );
+        $header_image = get_header_image();
+        $background_image = get_background_image();
+        
+        if ( $header_image && $header_image == $attachment_image )
+                remove_theme_mod( 'header_image' );
+
+        if ( $background_image && $background_image == $attachment_image )
+                remove_theme_mod( 'background_image' );
+}
+
+add_action( 'delete_attachment', '_delete_attachment_theme_mod' );
+
 ?>