net: Fix double-free when using GrlNet in Python
grl_net_wc_request_finish() claims to have a "transfer full" content argument but it actually returns a pointer to a variable inside the GrlNetWc object, leading to possible double-frees.
grl_net_wc_request_finish() claims to have a "transfer full" content argument but it actually returns a pointer to a variable inside the GrlNetWc object, leading to possible double-frees.