wp_set_post_terms without append parameter set.

Hey would you guys be able to make the following change. The non append here is causing me to lose all taxonimes passed to wp_insert_post using the tax_input param.

Index: gfcptaddonbase.php
===================================================================
--- gfcptaddonbase.php	(revision 659110)
+++ gfcptaddonbase.php	(working copy)
@@ -412,7 +412,7 @@
             } else if ( array_key_exists( 'type', $field ) && $field['type'] == 'text' ) {
               $terms = $entry[$field['id']];
               if ( !empty($terms) )
-                wp_set_post_terms( $entry['post_id'], $terms, $taxonomy );
+                wp_set_post_terms( $entry['post_id'], $terms, $taxonomy, true );
             } else {
                 $term_id = (int) $entry[$field['id']];
                 if ( $term_id > 0 )
@@ -422,4 +422,4 @@
     }
 }

-?>
\ No newline at end of file
+?>

http://wordpress.org/extend/plugins/gravity-forms-custom-post-types/