use %s with fprintf

$OpenBSD: patch-uuconv_c,v 1.1.1.1 2001/07/13 02:27:16 fgsch Exp $
--- uuconv.c.orig	Sun Aug 20 15:29:45 1995
+++ uuconv.c	Thu Jul 12 21:38:53 2001
@@ -684,7 +684,7 @@ uvwrite_chat_script (e, pzarg)
     {
       if ((*pz)[0] != '-' && pz != pzarg)
 	fprintf (e, " ");
-      fprintf (e, *pz);
+      fprintf (e, "%s", *pz);
     }
 }