bitcoin: add nlocktime arg to create_psbt.

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

bitcoin/psbt.c

@@ -36,13 +36,13 @@ static struct wally_psbt *init_psbt(const tal_t *ctx, size_t num_inputs, size_t
 	return tal_steal(ctx, psbt);
 }
 
-struct wally_psbt *create_psbt(const tal_t *ctx, size_t num_inputs, size_t num_outputs)
+struct wally_psbt *create_psbt(const tal_t *ctx, size_t num_inputs, size_t num_outputs, u32 locktime)
 {
 	int wally_err;
 	struct wally_tx *wtx;
 	struct wally_psbt *psbt;
 
-	if (wally_tx_init_alloc(WALLY_TX_VERSION_2, 0, num_inputs, num_outputs, &wtx) != WALLY_OK)
+	if (wally_tx_init_alloc(WALLY_TX_VERSION_2, locktime, num_inputs, num_outputs, &wtx) != WALLY_OK)
 		abort();
 
 	psbt = init_psbt(ctx, num_inputs, num_outputs);

bitcoin/psbt.h

@@ -25,8 +25,9 @@ void psbt_destroy(struct wally_psbt *psbt);
  * @ctx - allocation context
  * @num_inputs - number of inputs to allocate
  * @num_outputs - number of outputs to allocate
+ * @locktime - locktime for the transaction
  */
-struct wally_psbt *create_psbt(const tal_t *ctx, size_t num_inputs, size_t num_outputs);
+struct wally_psbt *create_psbt(const tal_t *ctx, size_t num_inputs, size_t num_outputs, u32 locktime);
 
 /*
  * new_psbt - Create a PSBT, using the passed in tx

common/psbt_open.c

@@ -61,7 +61,7 @@ static const u8 *linearize_input(const tal_t *ctx,
 				 const struct wally_psbt_input *in,
 				 const struct wally_tx_input *tx_in)
 {
-	struct wally_psbt *psbt = create_psbt(NULL, 1, 0);
+	struct wally_psbt *psbt = create_psbt(NULL, 1, 0, 0);
 	size_t byte_len;
 
 	if (wally_tx_add_input(psbt->tx, tx_in) != WALLY_OK)
@@ -87,7 +87,7 @@ static const u8 *linearize_output(const tal_t *ctx,
 				  const struct wally_psbt_output *out,
 				  const struct wally_tx_output *tx_out)
 {
-	struct wally_psbt *psbt = create_psbt(NULL, 1, 1);
+	struct wally_psbt *psbt = create_psbt(NULL, 1, 1, 0);
 	size_t byte_len;
 	struct bitcoin_txid txid;
 

common/test/run-psbt_diff.c

@@ -127,7 +127,7 @@ int main(int argc, const char *argv[])
 	chainparams = chainparams_for_network("bitcoin");
 
 	/* Create two psbts! */
-	end = create_psbt(tmpctx, 1, 1);
+	end = create_psbt(tmpctx, 1, 1, 0);
 	if (wally_psbt_clone_alloc(end, flags, &start) != WALLY_OK)
 		abort();
 	diff_count(start, end, 0, 0);