[PATCH, libgfortran] Remove recursion check

[Thomas Koenig]

Hi Janne,

> 1) It's KISS
> 
> 2) I can't find anything in the code that would lead to endless 
> recursive invocation of the error printing functions.
> 
> So, Ok for trunk?

With async I/O, I think the possibilities of hitting
concurrent errors have increased, so I'd still prefer the
solution with wrapping a recursive lock around error handling.

Regards

	Thomas