fix some warnings (#660)

Co-authored-by: ArthurSonzogni <sonzogniarthur@gmail.com>

examples/component/menu_underline_animated_gallery.cpp

@@ -27,7 +27,7 @@ Component Text(const std::string& t) {
   return Renderer([t] { return text(t) | borderEmpty; });
 }
 
-int main(int argc, const char* argv[]) {
+int main() {
   using namespace std::literals;
   std::vector<std::string> tab_values{
       "Tab 1", "Tab 2", "Tab 3", "A very very long tab", "탭",