Possible soundness issue in ChildImp::wait

[gigaroby]

While conducting an internal unsafe review, we identified a possible soundness issue in ChildImp::wait

https://github.com/watchexec/command-group/blob/b88296fed10b18aebb7ad5889dab5e43b621297f/src/tokio/child/windows.rs#L100-L104

This function and the one below call the Clone impl that appears to undermine the unsafe Drop impl on self.handles.

[passcod]

This is the same root issue as the other one you just opened, yeah?