Remove unnecessary upcast from examples/squeezer_bin/main.rs

Author: mtilda

examples/squeezer_bin/main.rs

@@ -14,9 +14,7 @@ fn main() -> glib::ExitCode {
         let mode_switch = gtk::Switch::new();
         let switch_label = gtk::Label::new(Some("keep aspect ratio"));
         let squeezer = SqueezerBin::default();
-        squeezer.set_child(Some(
-            gtk::Label::new(Some("Hello World!")).upcast::<gtk::Widget>(),
-        ));
+        squeezer.set_child(Some(gtk::Label::new(Some("Hello World!"))));
 
         headerbar.pack_start(&mode_switch);
         headerbar.pack_start(&switch_label);