fix: clippy recommandations

Author: molivier

common/src/expiration.rs

@@ -44,8 +44,7 @@ impl Expiration {
         }
         let now = SystemTime::now()
             .duration_since(UNIX_EPOCH)
-            .map(|d| d.as_secs())
-            .unwrap_or(0);
+            .map_or(0, |d| d.as_secs());
         self.0 <= now
     }
 }