[util] Minor
diff --git a/util/options.cc b/util/options.cc
index 4cc8a86..109a0b4 100644
--- a/util/options.cc
+++ b/util/options.cc
@@ -790,9 +790,7 @@
 
   if (show_unicode) {
     serialize_line_no (line_no, gs);
-    hb_buffer_reset (scratch);
-    hb_buffer_add_utf8 (scratch, text, text_len, 0, -1);
-    serialize_unicode (scratch, gs);
+    serialize_unicode (buffer, gs);
     g_string_append_c (gs, '\n');
   }
 }