New review comment by waynevanson on void-packages repository

https://github.com/void-linux/void-packages/pull/24723#discussion_r487491572

Comment:
The patch is to ensure that `libtinfo.so.5` isn't used during the build process of spago.
There is a dependency called `haskeline` that requires it, which the patch addresses.

`libtinfo.so.6` is required so the correct version of `ghc` can be downloaded, which is what `ncurses-libtinfo-devel` installs via symlinks.