Bug#81059: fstat misbehaviour: errno set inappropriately

[Ben Collins]

Seems errno wasn't getting reset if a program called fxstat which tried to
call fstat64 and got ENOSYS. I'm not sure if this is the proper fix, but
I have provided a testcase which shows the problem. Note, the testcase
only works when you compile glibc against LFS capable kernel headers,
and then try to run it on a non-LFS capable kernel. I don't know any
other way around this.

2001-01-01  Ben Collins  <bcollins@debian.org>

	* sysdeps/unix/sysv/linux/i386/fxstat.c: Reset the old errno if
	  the syscall for fstat64 fails with ENOSYS.

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