Ticket #35658: 35658.22.diff

src/wp-includes/meta.php

@@ -1036 +1036 @@
         $has_old_sanitize_cb = false;
 
         if ( is_callable( $passed_args[0] ) ) {
-                $args['sanitize_callback'] = $passed_args[0];
+                $args = array(
+                        'sanitize_callback' => $passed_args[0],
+                );
+
                 $has_old_sanitize_cb = true;
         } else {
-                $args = $passed_args[0];
+                $args = (array) $args;
         }
 
         if ( isset( $passed_args[1] ) && is_callable( $passed_args[1] ) ) {