gossip: Pass broadcast_state to gossip_store

We'll be sourcing messages from this `broadcast_state` when rewriting the
`gossip_store`.

Signed-off-by: Christian Decker <decker.christian@gmail.com>

gossipd/gossip_store.c

@@ -18,6 +18,10 @@ static u8 gossip_store_version = 0x02;
 struct gossip_store {
 	int fd;
 	u8 version;
+
+	/* The broadcast struct we source messages from when rewriting the
+	 * gossip_store */
+	struct broadcast_state *broadcast;
 };
 
 static void gossip_store_destroy(struct gossip_store *gs)
@@ -25,10 +29,12 @@ static void gossip_store_destroy(struct gossip_store *gs)
 	close(gs->fd);
 }
 
-struct gossip_store *gossip_store_new(const tal_t *ctx)
+struct gossip_store *gossip_store_new(const tal_t *ctx,
+				      struct broadcast_state *broadcast)
 {
 	struct gossip_store *gs = tal(ctx, struct gossip_store);
 	gs->fd = open(GOSSIP_STORE_FILENAME, O_RDWR|O_APPEND|O_CREAT, 0600);
+	gs->broadcast = broadcast;
 
 	tal_add_destructor(gs, gossip_store_destroy);
 

gossipd/gossip_store.h

@@ -14,7 +14,8 @@
 struct gossip_store;
 struct routing_state;
 
-struct gossip_store *gossip_store_new(const tal_t *ctx);
+struct gossip_store *gossip_store_new(const tal_t *ctx,
+				      struct broadcast_state *broadcast);
 
 /**
  * Load the initial gossip store, if any.

gossipd/routing.c

@@ -96,7 +96,7 @@ struct routing_state *new_routing_state(const tal_t *ctx,
 	rstate->chain_hash = *chain_hash;
 	rstate->local_id = *local_id;
 	rstate->prune_timeout = prune_timeout;
-	rstate->store = gossip_store_new(rstate);
+	rstate->store = gossip_store_new(rstate, rstate->broadcasts);
 	rstate->dev_allow_localhost = dev_allow_localhost;
 	rstate->local_channel_announced = false;
 	list_head_init(&rstate->pending_cannouncement);