fixing compile problem mentioned in issue-81

[witherj]

I think the trailing comma is breaking the preprocessor on Win10 / Python 3.7. This workaround fixes it. See problem mentioned here: https://github.com/DanielStutzbach/blist/issues/81

[ctmakro]

omg, this should be fixed long ago. ran into exactly the same problem.

[billander]

This fix solves the problem. I applied manually but would it be possible to merge it to master and build package and publish it to Pypi.org?