fix(Window): avoid concurrency

src/modules/mpd.cpp

@@ -65,7 +65,7 @@ std::thread waybar::modules::MPD::event_listener() {
       try {
         if (connection_ == nullptr) {
           // Retry periodically if no connection
-          update();
+          dp.emit();
           std::this_thread::sleep_for(interval_);
         } else {
           waitForEvent();

src/modules/sway/window.cpp

@@ -25,6 +25,7 @@ void Window::onEvent(const struct Ipc::ipc_response& res) { getTree(); }
 
 void Window::onCmd(const struct Ipc::ipc_response& res) {
   try {
+    std::lock_guard<std::mutex> lock(mutex_);
     auto payload = parser_.parse(res.payload);
     auto [nb, id, name, app_id] = getFocusedNode(payload);
     if (!app_id_.empty()) {