Merge pull request #565 from takkanm/fix_unused_variable_path_warning

fix unused variable `path` warning

src/bin/rustfmt.rs

@@ -94,7 +94,7 @@ fn execute() -> i32 {
         Operation::Stdin(input, write_mode) => {
             // try to read config from local directory
             let config = match lookup_and_read_project_file(&Path::new(".")) {
-                Ok((path, toml)) => {
+                Ok((_, toml)) => {
                     Config::from_toml(&toml)
                 }
                 Err(_) => Default::default(),