[Issue 10195] permissive modify control without value

https://bugs.openldap.org/show_bug.cgi?id=10195

--- Comment #3 from lesignor@cirad.fr --- In the Microsoft documentation (https://learn.microsoft.com/en-us/previous-versions/windows/desktop/ldap/lda...), they write :

ldctl_value

No data for this control. In the berval structure, set bv_len to zero and bv_val to NULL.

As they said set bv_len to zero, I guess some developer choose to send 04 00 to set the length to 0, and other consider to remove all fields.

The ldap client, I use, is a dotnet client. I think it uses the c# sdk from Microsoft.

Would it be possible to accept both implementation (null or empty) ?

It will be a great help to migrate to openldap 2.6.x.

Thanks