fix: lifetime error — ajouter ; après MutexGuard pour dropper le temporaire avant state

Le compilateur suggérait: consider adding semicolon after the expression
so its temporaries are dropped sooner (E0597)

desktop/src/main.rs

@@ -141,7 +141,7 @@ fn main() {
                         let _ = child.kill();
                         let _ = child.wait();
                     }
-                }
+                };
             }
         })
         .run(tauri::generate_context!())