Hello!

The use of the $USER environment variable in the init script to conditionally
add the `--user` flag
(https://build.opensuse.org/package/view_file/home:luizluca:IPSIDS/suricata/suricata.init?expand=1)
seems like undesired behavior as this variable is defined by the `login`
program and exists in your shell when opening a new session. Thus, by default,
when the init process starts suricata, it correctly starts without `--user`,
but when `sudo /etc/init.d/suricata restart` is issued from a shell, the
process is restarted with `--user root`. I believe it would be better to use a
separate environment variable that is not automatically added by the `login`
program.

-Jesse