Use auto deref

Signed-off-by: hi-rustin <rustin.liu@gmail.com>

Author: 0xPoe

src/config.rs

@@ -171,7 +171,7 @@ impl PgpPublicKey {
     /// Retrieve the key.
     pub(crate) fn cert(&self) -> &Cert {
         match self {
-            Self::Builtin => &*BUILTIN_PGP_KEY,
+            Self::Builtin => &BUILTIN_PGP_KEY,
             Self::FromEnvironment(_, k) => k,
             Self::FromConfiguration(_, k) => k,
         }

src/dist/component/package.rs

@@ -149,7 +149,7 @@ impl<'a> TarPackage<'a> {
         // The rust-installer packages unpack to a directory called
         // $pkgname-$version-$target. Skip that directory when
         // unpacking.
-        unpack_without_first_dir(&mut archive, &*temp_dir, notify_handler)
+        unpack_without_first_dir(&mut archive, &temp_dir, notify_handler)
             .context("failed to extract package (perhaps you ran out of disk space?)")?;
 
         Ok(TarPackage(