fix strerror(0)

[Corinna Vinschen]

On May 25 13:02, Eric Blake wrote:
> http://austingroupbugs.net/view.php?id=382 states that POSIX requires
> strerror(0) to emit a message that indicates success, and not modify
> errno to EINVAL.
> 
> ---
>  newlib/ChangeLog              |    4 ++++
>  newlib/libc/string/strerror.c |    6 ++++++
>  2 files changed, 10 insertions(+), 0 deletions(-)
> 
> 2011-05-25  Eric Blake  <...>
> 
> 	* libc/string/strerror.c (_strerror_r): Report "Success" for 0.

Given the official interpretation this is a trivial fix.
Please apply.


Thanks,
Corinna

-- 
Corinna Vinschen
Cygwin Project Co-Leader
Red Hat