Fix dogfood issue for or_fun_call

clippy_lints/src/methods/or_fun_call.rs

@@ -59,7 +59,7 @@ fn check_unwrap_or_default(
                     span_replace_word,
                     &format!("use of `{}` followed by a call to `{}`", name, path),
                     "try this",
-                    format!("unwrap_or_default()"),
+                    "unwrap_or_default()".to_string(),
                     Applicability::MachineApplicable,
                 );