Fix SF tracker bug #403871:  AttributeError in ZipFile.__del__() when     there was an IOError opening the underlying file in ZipFile.__init__().
Fix SF tracker bug #403871:  AttributeError in ZipFile.__del__() when
    there was an IOError opening the underlying file in ZipFile.__init__().

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