[Toybox] Fix build error after 'make allyesconfig'

[Rob Landley]

On 01/11/2016 03:24 AM, Lipi C. H. Lee wrote:
> Hi, Rob.
> 
> Some source files in 'pending' directory have link error when xfork() is
> called after 'make allyesconfig'.
> 
> Lipi

Thanks for the heads up.

Hmmm. Unfortunately XVFORK() isn't quite a drop-in replacement for
xfork(). This makes the code compile, but may introduce more subtle
breakage. I'll have to take a closer look...

Rob