message: Address functional test nits
diff: @@ -240,8 +240,8 @@ class ECPubKey():
  x = int.from_bytes(data[1:33], 'big')
  if SECP256K1.is_x_coord(x):
  p = SECP256K1.lift_x(x)
  - # if the oddness of the y co-ord isn't correct, find the other
  - # valid y
  + # Make the Y coordinate odd if required (lift_x always produces
  + # a point with an even Y coordinate).
  if data[0] & 1:
  p = SECP256K1.negate(p)
  self.p = p
  @@ -542,7 +542,7 @@ class TestFrameworkKey(unittest.TestCase):
  sig_actual = sign_schnorr(seckey, msg, aux_rand)
  self.assertEqual(sig.hex(), sig_actual.hex(), "BIP340 test vector %i (%s): sig mismatch" % (i, comment))
  except RuntimeError as e:
  - self.assertFalse("BIP340 test vector %i (%s): signing raised exception %s" % (i, comment, e))
  + self.fail("BIP340 test vector %i (%s): signing raised exception %s" % (i, comment, e))
  result_actual = verify_schnorr(pubkey, sig, msg)
  if result:
  self.assertEqual(result, result_actual, "BIP340 test vector %i (%s): verification failed" % (i, comment))
  