Fixes name property in output when no challenge is sent

[ThePoShWolf]

PR Summary

As referenced in #51, this fixes the issue that causes server names to lose their first character in the output.

This was tested using your Windows server IP from #51 and my Linux server.

Context

Since line 85 was moving the stream's read position, it needs to be moved back for when the output object is built. So an else was added.

Changes

Here is the added code:

if ($Stream.ReadByte() -eq 65) {
    ...
} else {
    $Stream.BaseStream.Position = 0
}

Checklist

• Pull Request has a meaningful title.
• Summarised changes.
• Pull Request is ready to merge & is not WIP.
• Added tests / only testable interactively.
  • Make sure you add a new test if old tests do not effectively test the code changed.
• Added documentation / opened issue to track adding documentation at a later date.