Respect transfer/allow-none annotation on return/out args of a callback/vfunc
Note that allow-none does not seem to be set in the .gir for return value, so it's still hardcoded to true.
Closes #86 (closed).
Note that allow-none does not seem to be set in the .gir for return value, so it's still hardcoded to true.
Closes #86 (closed).