Polzoni Gilberto

I guess it's enough to change return value at [this point](https://github.com/jasmcaus/tau/blob/db667cbe2e7097778f5c30eef576e697ee23c92e/tau/tau.h#L940).  Should it return 0?

@jasmcaus I can' t fork this repo, so I'm not able to open a PR. Anyway, @matu3ba, below a minimal test for this issue. ``` c #include "stdbool.h" TAU_NO_MAIN(); bool...