Fix a regression when accepting a SSL certificate.
Review Request #13243 — Created Aug. 28, 2023 and submitted
The new client-building code in Subversion returns a client class and
not a tuple. One of the calls to this, used when accepting a SSL
certificate, was still treating it as a tuple, causing a crash when
accepting the certificate.
This is a small fix for updating the call site. Note that this function
will be removed when the new SSL code is in.
Verified that type checking was happy.