Compiler warnings fixes round 1.
diff --git a/ospfd/ospf_dump.h b/ospfd/ospf_dump.h
index 29d06c9..5f625ca 100644
--- a/ospfd/ospf_dump.h
+++ b/ospfd/ospf_dump.h
@@ -121,16 +121,16 @@
extern unsigned long term_debug_ospf_nssa;
/* Message Strings. */
-extern char *ospf_packet_type_str[];
+extern const char *ospf_packet_type_str[];
extern char *ospf_lsa_type_str[];
/* Prototypes. */
-char *ospf_area_name_string (struct ospf_area *);
-char *ospf_area_desc_string (struct ospf_area *);
-char *ospf_if_name_string (struct ospf_interface *);
+const char *ospf_area_name_string (struct ospf_area *);
+const char *ospf_area_desc_string (struct ospf_area *);
+const char *ospf_if_name_string (struct ospf_interface *);
void ospf_nbr_state_message (struct ospf_neighbor *, char *, size_t);
char *ospf_options_dump (u_char);
-char *ospf_timer_dump (struct thread *, char *, size_t);
+const char *ospf_timer_dump (struct thread *, char *, size_t);
void ospf_ip_header_dump (struct stream *);
void ospf_packet_dump (struct stream *);
void ospf_lsa_header_dump (struct lsa_header *);