Fix spurious setting error log messages (#2498)

Fixes a bug introduced in
https://github.com/zed-industries/zed/pull/2448, where error messages
would be logged if the user config didn't specify certain fields like
`journal` or `telemetry`.
e129ed2d91Max Brunsfeld committed on 5/22/2023, 6:44:21 PM· committed by GitHubparents043552121ada54
6 files changedLine totals unavailable