[Cython] typo in ExprNode.py

[Stefan Behnel]

Hi,

Hoyt Koepke wrote:
> Wait, I think there may be something I don't realize about that bit of
> code.  After merging in the new changes, I realize that I wasn't doing
> it correctly; i.e. I didn't realize that DEF was only for compile time
> expressions.
> 
> Are the tests in compile/ meant to compile without any errors?  If so,
> then forget the previous test case.

Thanks for providing it anyway. I moved it over to tests/errors/ and added
the expected error messages.

http://hg.cython.org/cython-devel/rev/6d42bbf30e7f

Stefan