In class bsdTableDB, add class variables db and env (set to None) to prevent close() called from __del__ from bombing out when __init__() fails early.
In class bsdTableDB, add class variables db and env (set to None) to
prevent close() called from __del__ from bombing out when __init__()
fails early.

sk-/python2.7-type-annotator,sk-/python2.7-type-annotator,sk-/python2.7-type-annotator