Ticket #15386: screen.diff

wp-admin/includes/screen.php

@@ -17 +17 @@
 function get_column_headers( $screen ) {
         if ( is_string( $screen ) )
                 $screen = convert_to_screen( $screen );
 
         static $column_headers = array();
 
         if ( ! isset( $column_headers[ $screen->id ] ) )
-                $column_headers[ $screen->id ] = apply_filters( 'manage_' . $screen->id . '_columns', array() );
-        
+                $column_headers[ $screen->id ] = apply_filters( 'manage_' . $screen->id . '_columns' );
+
         return $column_headers[ $screen->id ];
 }
 
 /**
  * Get a list of hidden columns.
  *
  * @since 2.7.0