gossipd: use u64 for broadcast index.

uintmap uses uint64_t, we should here too.

Couldn't resist drive-by style fix for increment :)

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

gossipd/broadcast.c

@@ -71,7 +71,7 @@ bool queue_broadcast(struct broadcast_state *bstate,
 	/* Now add the message to the queue */
 	msg = new_queued_message(bstate, type, tag, payload);
 	uintmap_add(&bstate->broadcasts, bstate->next_index, msg);
-	bstate->next_index += 1;
+	bstate->next_index++;
 	return evicted;
 }
 

gossipd/broadcast.h

@@ -20,7 +20,7 @@ struct queued_message {
 };
 
 struct broadcast_state {
-	u32 next_index;
+	u64 next_index;
 	UINTMAP(struct queued_message *) broadcasts;
 };