test: Prevent loop from running out of utxos in bip68 test

test/functional/feature_bip68_sequence.py

@@ -4,6 +4,7 @@
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
 """Test BIP68 implementation."""
 
+import random
 import time
 
 from test_framework.blocktools import (
@@ -130,7 +131,6 @@ class BIP68Test(BitcoinTestFramework):
         # transactions.
         max_outputs = 50
         while len(self.wallet.get_utxos(include_immature_coinbase=False, mark_as_spent=False)) < 200:
-            import random
             num_outputs = random.randint(1, max_outputs)
             self.wallet.send_self_transfer_multi(from_node=self.nodes[0], num_outputs=num_outputs)
             self.generate(self.wallet, 1)
@@ -197,7 +197,7 @@ class BIP68Test(BitcoinTestFramework):
                 value += utxos[j]["value"]*COIN
             # Overestimate the size of the tx - signatures should be less than 120 bytes, and leave 50 for the output
             tx_size = len(tx.serialize().hex())//2 + 120*num_inputs + 50
-            tx.vout.append(CTxOut(int(value - self.relayfee * tx_size * COIN / 1000), SCRIPT_W0_SH_OP_TRUE))
+            tx.vout.append(CTxOut(int(value - self.relayfee * tx_size * COIN / 1000), self.wallet.get_output_script()))
             self.wallet.sign_tx(tx=tx)
 
             if (using_sequence_locks and not should_pass):