[patch, libfortran] Fix PR 23598, iostat handling after library error

[Tobias Schlüter]

Thomas Koenig wrote:
> OK for mainline, and for 4.0 once I've regression-tested it there?
> 
> 	Thomas
> 
> 2005-08-28  Thomas Koenig  <Thomas.Koenig@online.de>
> 
> 	PR libfortran/23598
> 	* io/lock.c(library_start):  If iostat is present, clear
> 	ioparm.library_return unconditionally.
> 
> 2005-02-28  Thomas Koenig  <Thomas.Koenig@online.de>
> 
> 	PR libfortran/23598
> 	* gfortran.dg/iostat_1.f90:  New test.
> 

Ok, but please correct the ChangeLog entry :-)

Thanks,
- Tobi

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