[BusyBox] patch: awk segfaults on export of empty env vars

[Larry Doolittle]

Rob -

> Now I just have to finish rewriting sort to accept -k, make gzip and gunzip 
> work for more than one file at a time, give ar a write mode, add comm (which 
> perl needs in order to build), add -i and fuzz factor support to patch, add 
> bzip2 compress side support, deal with the whole mess of busybox shells so I 
> can replace bash, add diff (at least -u) and a simple man command that cat 
> just bzcat a preformatted page, and dust off the init rewrite.

So in a few years, between you, D. J. Bernstein, and the GNU project,
we will have three independent rewrites of Unix.    ;-)

     - Larry