bgpd: don't be confused by "unspecific" subcode in the NOTIFY message.

* bgp_debug.c (bgp_notify_open_msg, bgp_notify_update_msg,
  bgp_notify_cease_msg, bgp_notify_capability_msg): add messages for
  "unspecific" subcode.
diff --git a/bgpd/bgp_debug.c b/bgpd/bgp_debug.c
index 26b35df..8e16186 100644
--- a/bgpd/bgp_debug.c
+++ b/bgpd/bgp_debug.c
@@ -105,6 +105,7 @@
 
 static const struct message bgp_notify_open_msg[] = 
 {
+  { BGP_NOTIFY_SUBCODE_UNSPECIFIC, "/Unspecific"},
   { BGP_NOTIFY_OPEN_UNSUP_VERSION, "/Unsupported Version Number" },
   { BGP_NOTIFY_OPEN_BAD_PEER_AS, "/Bad Peer AS"},
   { BGP_NOTIFY_OPEN_BAD_BGP_IDENT, "/Bad BGP Identifier"},
@@ -117,6 +118,7 @@
 
 static const struct message bgp_notify_update_msg[] = 
 {
+  { BGP_NOTIFY_SUBCODE_UNSPECIFIC, "/Unspecific"},
   { BGP_NOTIFY_UPDATE_MAL_ATTR, "/Malformed Attribute List"},
   { BGP_NOTIFY_UPDATE_UNREC_ATTR, "/Unrecognized Well-known Attribute"},
   { BGP_NOTIFY_UPDATE_MISS_ATTR, "/Missing Well-known Attribute"},
@@ -133,6 +135,7 @@
 
 static const struct message bgp_notify_cease_msg[] =
 {
+  { BGP_NOTIFY_SUBCODE_UNSPECIFIC, "/Unspecific"},
   { BGP_NOTIFY_CEASE_MAX_PREFIX, "/Maximum Number of Prefixes Reached"},
   { BGP_NOTIFY_CEASE_ADMIN_SHUTDOWN, "/Administratively Shutdown"},
   { BGP_NOTIFY_CEASE_PEER_UNCONFIG, "/Peer Unconfigured"},
@@ -146,6 +149,7 @@
 
 static const struct message bgp_notify_capability_msg[] = 
 {
+  { BGP_NOTIFY_SUBCODE_UNSPECIFIC, "/Unspecific"},
   { BGP_NOTIFY_CAPABILITY_INVALID_ACTION, "/Invalid Action Value" },
   { BGP_NOTIFY_CAPABILITY_INVALID_LENGTH, "/Invalid Capability Length"},
   { BGP_NOTIFY_CAPABILITY_MALFORMED_CODE, "/Malformed Capability Value"},