[python-ldap] syncrepl fix for pyasn1 >= 0.3

[Christian Heimes]

On 2017-11-07 13:53, Michael Ströder wrote:
> Christian Heimes wrote:
>> syncrepl does no longer work with pyasn1 >= 0.3. pyasn1 changed its API
>> a bit. Ilya, the author and maintainer of pyasn1, has provided a fix for
>> Python 3 port of python-ldap. I have attached his original patch and a
>> backport to python-ldap.
>>
>> Patch source: https://github.com/pyldap/pyldap/pull/126
> 
> Many thanks for your contribution.
> 
> Is this code still compatible with pyasn1 < 0.3?

According to Ilya, the code is compatible with any reasonable recent
version of pyasn1 0.2, too. All checks first do 'value is None' for
pyasn1, then 'not value.hasValue()'.

Christian