There's a merged pull request on the void-packages repository

sunwait: update to 0.9.1.
https://github.com/void-linux/void-packages/pull/43060

Description:
#### Testing the changes
- I tested the changes in this PR: **briefly**

#### Local build testing

```
pkg      host         target        cross  result
sunwait  x86_64       x86_64        n      OK
sunwait  x86_64-musl  x86_64-musl   n      OK
sunwait  i686         i686          n      OK
sunwait  x86_64       aarch64-musl  y      OK
sunwait  x86_64       aarch64       y      OK
sunwait  x86_64       armv7l-musl   y      OK
sunwait  x86_64       armv7l        y      OK
sunwait  x86_64       armv6l-musl   y      OK
sunwait  x86_64       armv6l        y      OK

```

> As of 2019-03-22, the version at GitHub (https://github.com/risacher/sunwait should be considered "current".