Vendored libpostal requires update for libpostal-sys #22
Description
Just played around with some libpostal bindings and this seemed like one of the more promising ones, considering its ability to statically build libpostal. However I did notice that it currently does not build due to some warnings.
Doing a simple rebase against upstream libpostal for https://github.com/faradayio/libpostal solved the issue for me.
This does leave me a bit concerned about these libpostal bindings though, considering any upstream change requires manual intervention to get pulled for libpostal-sys, which does not seem to be maintained. I'm not sure Rust needs more libpostal bindings, but it would be nice if one of them was regularly maintained.