Reading https://github.com/Geal/rust-syslog/issues/79, I came to a

Reading https://github.com/Geal/rust-syslog/issues/79, I came to a
related conclusion that our syslog_r should not stomp on errno.
The errno being returned from sendsyslog() isn't exactly compatible
with the what a legacy syslog_r() would do here anyways, and it is
better to just be void and non-stomping;
ok millert bluhm