Ticket #15743: 15743.diff

wp-includes/functions.php

@@ -4220 +4220 @@
         if ( $context != '' ) {
                 $extra_headers = apply_filters( "extra_{$context}_headers", array() );
 
-                $extra_headers = array_flip( $extra_headers );
-                foreach( $extra_headers as $key=>$value ) {
-                        $extra_headers[$key] = $key;
-                }
+                $extra_headers = array_combine( $extra_headers, $extra_headers );
+
                 $all_headers = array_merge( $extra_headers, (array) $default_headers );
         } else {
                 $all_headers = $default_headers;