wallet: show input txid in little endian for json_listtransactions

Changelog-Fixed: jsonrpc: `listtransactions` now displays all txids as little endian

Signed-off-by: Antoine Poinsot <darosior@protonmail.com>

tests/test_misc.py

@@ -2390,7 +2390,6 @@ def test_commitfee_option(node_factory):
     assert l1_commit_fees == 2 * l2_commit_fees == 2 * 4 * mock_wu  # WU->VB
 
 
-@pytest.mark.xfail(strict=True)
 def test_listtransactions(node_factory):
     """Sanity check for the listtransactions RPC command"""
     l1, l2 = node_factory.get_nodes(2, opts=[{}, {}])

wallet/walletrpc.c

@@ -1035,9 +1035,12 @@ static void json_transaction_details(struct json_stream *response,
 
 		json_array_start(response, "inputs");
 		for (size_t i = 0; i < wtx->num_inputs; i++) {
+			struct bitcoin_txid prevtxid;
 			struct wally_tx_input *in = &wtx->inputs[i];
+			bitcoin_tx_input_get_txid(tx->tx, i, &prevtxid);
+
 			json_object_start(response, NULL);
-			json_add_hex(response, "txid", in->txhash, sizeof(in->txhash));
+			json_add_txid(response, "txid", &prevtxid);
 			json_add_u32(response, "index", in->index);
 			json_add_u32(response, "sequence", in->sequence);
 #if EXPERIMENTAL_FEATURES