fix: Updater "Error: Could not connect to the server." in macOS

[YanDevDe]

If squirrelDownloadedUpdate is false, then we still need to have the proxy server opened for the "update-downloaded" event. Otherwise you're getting following error:

[2022-03-26 17:18:30.258] [info]  Proxy server for native Squirrel.Mac is closed (fileToProxy=https://utils.pacprotocol.com/yansafe-testnet/build/mac/yanSAFE-testnet-2.2.1-testnet.4-arm64-mac.zip)
[2022-03-26 17:18:30.274] [warn]  Error: Verbindung zum Server konnte nicht hergestellt werden.
[2022-03-26 17:18:30.274] [error] Error: Error: Verbindung zum Server konnte nicht hergestellt werden.

"Error: Verbindung zum Server konnte nicht hergestellt werden." = "Error: Could not connect to the server."

Moving this.server.close() after this.nativeUpdater.quitAndInstall() fixes the issue.

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🦋 Changeset detected

Latest commit: 1b2e60c

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electron-updater	Patch

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[YanDevDe]

Related to this issue #6699

[mmaietta]

Thank you for your contribution!

[gbacskai]

I still have the same issue because of ping 127.0.0.1 is:
PING 127.0.0.1 (127.0.0.1): 56 data bytes
ping: sendto: Can't assign requested address

Seems the firewall restrict the 127.0.0.1 access.

Can the server listen on an other ip address what is linked to network adapter?