From e207c073eec8767216dc75bb950005c64b16d342 Mon Sep 17 00:00:00 2001
From: Sebastien Bourdeauducq <sb@m-labs.hk>
Date: Mon, 6 Jul 2020 11:42:43 +0800
Subject: [PATCH] config: remove unnecessary mut

---
 src/runtime/src/config.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/runtime/src/config.rs b/src/runtime/src/config.rs
index 05631b5e..6902f514 100644
--- a/src/runtime/src/config.rs
+++ b/src/runtime/src/config.rs
@@ -77,7 +77,7 @@ impl Config {
         Ok(Config { fs })
     }
 
-    fn read<'b>(&mut self, key: &'b str) -> Result<'b, Vec<u8>> {
+    fn read<'b>(&self, key: &'b str) -> Result<'b, Vec<u8>> {
         let root_dir = self.fs.root_dir();
         let mut buffer: Vec<u8> = Vec::new();
         match root_dir.open_file(&["/CONFIG/", key, ".BIN"].concat()) {
@@ -90,7 +90,7 @@ impl Config {
         Ok(buffer)
     }
 
-    pub fn read_str<'b>(&mut self, key: &'b str) -> Result<'b, String> {
+    pub fn read_str<'b>(&self, key: &'b str) -> Result<'b, String> {
         Ok(String::from_utf8(self.read(key)?)?)
     }
 }