Rust complains with required type annotations when passing None as parent window to dialog::message

[Blakeinstein]

When passing None as the parent_window reference, rust complains for missing type annotations.

Here is the complete error.

message(None, "Error parsing default config", err.to_string())

type annotations needed
cannot satisfy `_: tauri::Runtime`rustcE0283
main.rs(1, 1): required by a bound in this
dialog.rs(167, 19): required by this bound in `message`
settings.rs(30, 14): consider specifying the type arguments in the function call: `::<R, impl AsRef<str>, impl AsRef<str>>`

[Blakeinstein]

The solution is to use tauri's None as Option::<&tauri::Window<tauri::Wry>>::None

message(Option::<&tauri::Window<tauri::Wry>>::None, "Error parsing default config", err.to_string())