gossmap: add callback for gossipd to see dying messages.

gossmap doesn't care, so gossipd currently has to iterate through the
store to find them at startup.  Create a callback for gossipd to use
instead.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

gossipd/gossmap_manage.c

@@ -464,7 +464,9 @@ static bool setup_gossmap(struct gossmap_manage *gm,
 	/* This actually loads it into memory, with strict checks. */
 	gm->raw_gossmap = gossmap_load_initial(gm, GOSSIP_STORE_FILENAME,
 					       expected_len,
-					       gossmap_logcb, daemon);
+					       gossmap_logcb,
+					       NULL,
+					       daemon);
 	if (!gm->raw_gossmap) {
 		gm->gs = tal_free(gm->gs);
 		return false;

gossipd/test/run-next_block_range.c

@@ -9,6 +9,7 @@
 #include <common/sciddir_or_pubkey.h>
 #include <common/setup.h>
 #include <common/wireaddr.h>
+#include <common/gossip_store_wiregen.h>
 #include <stdio.h>
 
 /* AUTOGENERATED MOCKS START */
@@ -19,6 +20,9 @@ struct peer *find_peer(struct daemon *daemon UNNEEDED, const struct node_id *id
 struct peer *first_random_peer(struct daemon *daemon UNNEEDED,
 			       struct peer_node_id_map_iter *it UNNEEDED)
 { fprintf(stderr, "first_random_peer called!\n"); abort(); }
+/* Generated stub for fromwire_gossip_store_chan_dying */
+bool fromwire_gossip_store_chan_dying(const void *p UNNEEDED, struct short_channel_id *scid UNNEEDED, u32 *blockheight UNNEEDED)
+{ fprintf(stderr, "fromwire_gossip_store_chan_dying called!\n"); abort(); }
 /* Generated stub for gossmap_manage_get_gossmap */
 struct gossmap *gossmap_manage_get_gossmap(struct gossmap_manage *gm UNNEEDED)
 { fprintf(stderr, "gossmap_manage_get_gossmap called!\n"); abort(); }