message: fix for unregister arrow tests
diff: @@ -17,9 +17,9 @@ class TestArrowUnregister(object):
  parquet_filename = os.path.join(os.path.dirname(os.path.realpath(__file__)),'data','userdata1.parquet')
  cols = 'id, first_name, last_name, email, gender, ip_address, cc, country, birthdate, salary, title, comments'
  - arrow_table = pyarrow.parquet.read_table(parquet_filename)
  + arrow_table_obj = pyarrow.parquet.read_table(parquet_filename)
  connection = duckdb.connect(":memory:")
  - connection.register_arrow("arrow_table", arrow_table)
  + connection.register_arrow("arrow_table", arrow_table_obj)
  arrow_table_2 = connection.execute("SELECT * FROM arrow_table;").fetch_arrow_table()
  connection.unregister("arrow_table")
  @@ -39,8 +39,8 @@ class TestArrowUnregister(object):
  connection = duckdb.connect(db)
  parquet_filename = os.path.join(os.path.dirname(os.path.realpath(__file__)),'data','userdata1.parquet')
  cols = 'id, first_name, last_name, email, gender, ip_address, cc, country, birthdate, salary, title, comments'
  - arrow_table = pyarrow.parquet.read_table(parquet_filename)
  - connection.register_arrow("arrow_table", arrow_table)
  + arrow_table_obj = pyarrow.parquet.read_table(parquet_filename)
  + connection.register_arrow("arrow_table", arrow_table_obj)
  connection.unregister("arrow_table") # Attempting to unregister.
  connection.close()
  # Reconnecting while Arrow Table still in mem.
  @@ -49,7 +49,7 @@ class TestArrowUnregister(object):
  with pytest.raises(RuntimeError):
  connection.execute("SELECT * FROM arrow_table;").fetch_arrow_table()
  connection.close()
  - del arrow_table
  + del arrow_table_obj
  gc.collect()
  # Reconnecting after Arrow Table is freed.
  connection = duckdb.connect(db)
  