use %s with fprintf

$OpenBSD: patch-uuconv_c,v 1.2 2003/12/14 01:39:18 naddy Exp $
--- uuconv.c.orig	2003-05-29 08:08:47.000000000 +0200
+++ uuconv.c	2003-11-11 21:17:58.000000000 +0100
@@ -676,7 +676,7 @@ uvwrite_chat_script (e, pzarg)
     {
       if ((*pz)[0] != '-' && pz != pzarg)
 	fprintf (e, " ");
-      fprintf (e, *pz);
+      fprintf (e, "%s", *pz);
     }
 }