Small nit

src/tui/app/machine/matches.rs

@@ -153,12 +153,8 @@ impl IAppInteractMatches for AppMachine<AppMatches> {
             let result = index.saturating_add(1);
             let to = cmp::min(
                 result,
-                self.state
-                    .current
-                    .as_ref()
-                    .expect("selected() implies current exists")
-                    .len()
-                    .saturating_sub(1),
+                // selected() implies current exists
+                self.state.current.as_ref().unwrap().len().saturating_sub(1),
             );
             self.state.state.list.select(Some(to));
         }