install: Fix a clippy lint

Apparently the clippy task wasn't gating.  But honestly I'm
getting feeling like clippy's value proposition has slipped by default.

Signed-off-by: Colin Walters <[email protected]>

Author: cgwalters

lib/src/install.rs

@@ -406,7 +406,7 @@ async fn initialize_ostree_root_from_self(
     let target_imgname = opts
         .target_imgref
         .as_deref()
-        .unwrap_or_else(|| state.source.imageref.name.as_str());
+        .unwrap_or(state.source.imageref.name.as_str());
     let target_transport = ostree_container::Transport::try_from(opts.target_transport.as_str())?;
     let target_imgref = ostree_container::OstreeImageReference {
         sigverify: target_sigverify,