Function custom_field_get_value reruns g_cache_cf_bug_values == null making mc_issue_get fail.

bugdata = client.service.mc_issue_get('admin','password',1)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/local/lib/python2.7/dist-packages/suds/client.py", line 542, in call
return client.invoke(args, kwargs)
File "/usr/local/lib/python2.7/dist-packages/suds/client.py", line 602, in invoke
result = self.send(soapenv)
File "/usr/local/lib/python2.7/dist-packages/suds/client.py", line 649, in send
result = self.failed(binding, e)
File "/usr/local/lib/python2.7/dist-packages/suds/client.py", line 702, in failed
r, p = binding.get_fault(reply)
File "/usr/local/lib/python2.7/dist-packages/suds/bindings/binding.py", line 265, in get_fault
raise WebFault(p, faultroot)
suds.WebFault: Server raised fault: 'Error Type: SYSTEM NOTICE,
Error Description: Undefined offset: 1'