Do not send 580 when negotiation fails (382 has already been sent).

http://inn.eyrie.org/viewcvs/branches/2.4/nnrpd/misc.c?r1=8057&r2=8056&pathrev=8057&view=patch

--- 2.4/nnrpd/misc.c	2008/09/26 23:02:08	8056
+++ 2.4/nnrpd/misc.c	2008/09/26 23:11:47	8057
@@ -544,7 +544,7 @@
   result=tls_start_servertls(0, /* read */
 			     1); /* write */
   if (result==-1) {
-    Reply("%d Starttls failed\r\n", NNTP_STARTTLS_BAD_VAL);
+    /* No reply because we have already sent NNTP_STARTTLS_NEXT_VAL. */
     return;
   }
   nnrpd_starttls_done = 1;