bash: apply CVE-2014-7169 patch.

CVE-2014-7169 fixes the incomplete CVE-2014-6271 update.
I was unable to find a standalone version of the patch that wasn't inside a source package of a Linux distribution, hence the gist. In this case, the patch in my gist came from Ubuntu ([bash_4.3-7ubuntu1.3.debian.tar.gz](https://launchpad.net/ubuntu/+source/bash/4.3-7ubuntu1.3)).

I don't like it either.