added win32 build compatibility

I'm trying to use irony mode in win32 environment. 
After irony-server is built and run the basic config elisp you provide, I'm now seeing the follwing error when I hit C-c C-b.

[1 error] Type `C-c C-b' to configure project
setq: Lisp nesting exceeds `max-lisp-eval-depth'

Any hint?