Fix -sname support

[nifoc]

Summary of changes

-sname support was not working in all cases (e.g. https://github.com/bitwalker/distillery/issues/699). This fixes at least the things mentioned in the above issue.

Checklist

• [ ] New functions have typespecs, changed functions were updated
• [ ] Same for documentation, including moduledocs
• [ ] Tests were added or updated to cover changes
• [x] Commits were squashed into a single coherent commit

Licensing/Copyright

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[albertored]

Any news on this? I have the same problem being not able to ping or remote_console to my app with sname because of the inverted if statement in this PR