[patch, libgfortran] Fix for PR 19451

[Paul Brook]

> 2005-01-19  Thomas Koenig  <Thomas.Koenig@online.de>
>
>  PR libfortran/19451
>  * io/transfer.c (finalize_transfer):  Don't do anything if
>  there is an error condition.
>
>  PR libfortran/19451
>  * open_readonly_file.f90:  New test.

Applied, thanks.

The "system" nastyness in the testcase was unnecessary. Specifying 
action="read" was sufficient to trigger the bug, filesystem permissions don't 
matter.

Paul