do not allocate the option_endpoint_urls list
do not allocate the option_endpoint_urls list

Since the list is not currently used, it's better to
not allocate it rather than properly destroy it in
pep_destroy(). The field could even be removed, but
it's kept there to avoid ABI-incompatibility risks.

fix issue #1

argus-authz/argus-pep-api-c,argus-authz/argus-pep-api-c,argus-authz/argus-pep-api-c