Investigate error levels in NSIS

[jaimergp]

Shared by @elovelan in ScoopInstaller/Extras#10457 (comment)

@jaimergp, the NSIS docs indicate that NSIS should be able to return a failure exit code. I'm happy to dig into this more if there's a chance that updating constructor might resolve it. I realize that may be a risky proposition however if any software is relying on it always having a return code of 0, so I'm also happy to continue down the path of your original suggestion.

[github-actions]

Hi there, thank you for your contribution!

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Thanks!

[jaimergp]

not stale