[BGP/cleanup] make some damp function static
diff --git a/bgpd/bgp_damp.h b/bgpd/bgp_damp.h
index 17c31cb..e0bef4a 100644
--- a/bgpd/bgp_damp.h
+++ b/bgpd/bgp_damp.h
@@ -138,10 +138,9 @@
 extern int bgp_damp_scan (struct bgp_info *, afi_t, safi_t);
 extern void bgp_damp_info_free (struct bgp_damp_info *, int);
 extern void bgp_damp_info_clean (void);
-extern char * bgp_get_reuse_time (unsigned int, char*, size_t);
 extern int bgp_damp_decay (time_t, int);
 extern void bgp_config_write_damp (struct vty *);
 extern void bgp_damp_info_vty (struct vty *, struct bgp_info *);
-extern char * bgp_damp_reuse_time_vty (struct vty *, struct bgp_info *);
+extern const char * bgp_damp_reuse_time_vty (struct vty *, struct bgp_info *);
 
 #endif /* _QUAGGA_BGP_DAMP_H */