fix urgent window icons

src/widgets/volumeWidget.cpp

@@ -52,7 +52,7 @@ void VolumeWidget::update() {
         std::regex r_number(R"((\d+(?:\.\d+)?))");
 
         std::string text = out;
-        int percent = -1;
+        int percent      = -1;
 
         if (std::regex_search(text, m, r_percent)) {
             percent = static_cast<int>(std::round(std::stod(m[1].str())));