(Win32 API) callback to Python, threading hiccups

[Scott David Daniels]

Francois De Serres wrote:
>            PyGILState_STATE gil = PyGILState_Ensure();
>            result = PyEval_CallObject(my_callback, arglist);   
>            PyGILState_Release(gil);
>            Py_DECREF(arglist);
>            Py_DECREF(result);

I think this should be:
          PyGILState_STATE gil = PyGILState_Ensure();
          result = PyEval_CallObject(my_callback, arglist);
          Py_DECREF(arglist);
          Py_DECREF(result);
          PyGILState_Release(gil);

The DECREFs need to be protected, that is where storage is
recycled and such, and you still need Python's data structures
to do that kind of work.

--Scott David Daniels