Use std::mem::take instead of std::mem::replace, for clarity.

  - Replace

        let bar = std::mem::replace(&foo, Default::Default());

    with

        let bar = std::mem::take(&foo);

    The new version seems a little clearer.

  - Found by clippy:
    https://rust-lang.github.io/rust-clippy/master/index.html#mem_replace_with_default

1 files changed, 1 insertions, 2 deletions

diff --git a/openpgp/src/parse/hashed_reader.rs b/openpgp/src/parse/hashed_reader.rs
index 0568829d..00f56427 100644
--- a/openpgp/src/parse/hashed_reader.rs
+++ b/openpgp/src/parse/hashed_reader.rs
@@ -427,8 +427,7 @@ mod test {
 
             let cookie = reader.cookie_mut();
 
-            let mut hashes = mem::replace(&mut cookie.sig_group_mut().hashes,
-                                          Default::default());
+            let mut hashes = std::mem::take(&mut cookie.sig_group_mut().hashes);
             for mode in hashes.iter_mut() {
                 let hash = mode.as_mut();
                 let algo = hash.algo();