chore: Fix several style lints (#17488)

It's not comprehensive enough to start linting on `style` group, but
hey, it's a start.

Release Notes:

- N/A

crates/gpui/src/util.rs

@@ -74,7 +74,7 @@ impl<'a> std::fmt::Debug for CwdBacktrace<'a> {
             if frame
                 .symbols()
                 .iter()
-                .any(|s| s.filename().map_or(false, |f| f.starts_with(&cwd)))
+                .any(|s| s.filename().map_or(false, |f| f.starts_with(cwd)))
             {
                 formatted_frame.backtrace_frame(frame)?;
             }