Function wallet_utxoset_prune

wallet/wallet.c:3753–3775

* wallet_utxoset_prune -- Remove spent UTXO entries that are old */

 * wallet_utxoset_prune -- Remove spent UTXO entries that are old
 */
static void wallet_utxoset_prune(struct wallet *w, const u32 blockheight)
{
	struct db_stmt *stmt;

	stmt = db_prepare_v2(
	    w->db,
	    SQL("SELECT txid, outnum FROM utxoset WHERE spendheight < ?"));
	db_bind_int(stmt, 0, blockheight - UTXO_PRUNE_DEPTH);
	db_query_prepared(stmt);

	while (db_step(stmt)) {
		struct bitcoin_outpoint outpoint;
		db_col_txid(stmt, "txid", &outpoint.txid);
		outpoint.n = db_col_int(stmt, "outnum");
		outpointfilter_remove(w->utxoset_outpoints, &outpoint);
	}
	tal_free(stmt);

	stmt = db_prepare_v2(w->db,
			     SQL("DELETE FROM utxoset WHERE spendheight < ?"));
	db_bind_int(stmt, 0, blockheight - UTXO_PRUNE_DEPTH);
	db_exec_prepared_v2(take(stmt));
}

void wallet_block_add(struct wallet *w, struct block *b)
{