fixup

Author: dlon

mullvad-daemon/src/version_check.rs

@@ -403,11 +403,8 @@ impl UpdateContext {
         async move {
             log::debug!("Writing version check cache to {}", cache_path.display());
             let cached_app_version = CachedAppVersionInfo::from(last_app_version.to_owned());
-            let mut buf =
-                serde_json::to_vec_pretty(&cached_app_version).map_err(Error::Serialize)?;
-            let mut read_buf: &[u8] = buf.as_mut();
-
-            tokio::fs::write(cache_path, &mut read_buf)
+            let buf = serde_json::to_vec_pretty(&cached_app_version).map_err(Error::Serialize)?;
+            tokio::fs::write(cache_path, buf)
                 .await
                 .map_err(Error::WriteVersionCache)
         }