message: test: Only try witness deserialize when checking for witness deserialize failure
diff: @@ -2097,14 +2097,14 @@ class SegWitTest(BitcoinTestFramework):
  raw = self.nodes[0].createrawtransaction([{"txid": unspent['txid'], "vout": unspent['vout']}], {self.nodes[0].getnewaddress(): 1})
  tx = FromHex(CTransaction(), raw)
  - assert_raises_rpc_error(-22, "TX decode failed", self.nodes[0].decoderawtransaction, serialize_with_bogus_witness(tx).hex())
  + assert_raises_rpc_error(-22, "TX decode failed", self.nodes[0].decoderawtransaction, hexstring=serialize_with_bogus_witness(tx).hex(), iswitness=True)
  with self.nodes[0].assert_debug_log(['Superfluous witness record']):
  self.test_node.send_and_ping(msg_bogus_tx(tx))
  raw = self.nodes[0].signrawtransactionwithwallet(raw)
  assert raw['complete']
  raw = raw['hex']
  tx = FromHex(CTransaction(), raw)
  - assert_raises_rpc_error(-22, "TX decode failed", self.nodes[0].decoderawtransaction, serialize_with_bogus_witness(tx).hex())
  + assert_raises_rpc_error(-22, "TX decode failed", self.nodes[0].decoderawtransaction, hexstring=serialize_with_bogus_witness(tx).hex(), iswitness=True)
  with self.nodes[0].assert_debug_log(['Unknown transaction optional data']):
  self.test_node.send_and_ping(msg_bogus_tx(tx))
  