fix: compile error

src/cmd_gitcheck.rs

@@ -1,6 +1,6 @@
 use std::fs;
 use clap::{ArgMatches, SubCommand, App, Arg};
-use rust_util::{util_git, util_os};
+use rust_util::{util_git, util_file};
 use serde::{Serialize, Deserialize};
 use crate::cmd::{Command, CommandResult};
 
@@ -49,7 +49,7 @@ impl Command for CommandImpl {
         let allow_master = sub_arg_matches.is_present("allow-master");
         let git_check_json = match dir {
             None => GIT_CHECK_JSON.to_string(),
-            Some(dir) => util_os::join_path(dir.to_string(), GIT_CHECK_JSON),
+            Some(dir) => util_file::join_path(dir, GIT_CHECK_JSON),
         };
         let git_check_config = match fs::read_to_string(&git_check_json) {
             Ok(s) => serde_json::from_str::<GitCheckConfig>(&s).expect(&format!("Parse file failed: {}", GIT_CHECK_JSON)),