Regression: busybox xargs broken

[Aaro Koskinen]

Hi,

I noticed the following:

	$ echo foo bar | ./busybox xargs -n1
foo
b
a
r

This makes busybox build fail under busybox (scripts/trylink uses xargs).

Bisected to:

commit 1ff7002b1d229c678fdffebec602fb4c54439a31 (HEAD -> master)
Author: Ron Yorston <rmy at pobox.com>
Date:   Fri Jan 24 13:16:45 2020 +0000

    xargs: fix handling of quoted arguments, closes 11441

A.