fix menu_window braking the terminal on CTRL+C

Author: staxfur

examples/menu_window.cpp

@@ -50,7 +50,7 @@ std::string render(Term::Window& scr,
 
 int main() {
  try {
- Terminal term(true, true, false, false);
+ Terminal term(true, true, true, true);
  int rows{}, cols{};
  Term::get_term_size(rows, cols);
  int pos = 5;
@@ -86,6 +86,7 @@ int main() {
  break;
  case 'q':
  case Key::ESC:
+ case Key::CTRL+'c':
  on = false;
  break;
  }