fix unnecessary cast lint (#2596)

* fix clippy lints on Windows

* fix lints on other platforms

* a couple more

* again

* don't know what's goging on anymore

* fix examples

* comon

* how about now?

* this is getting annoying

* hmmm

* explicitly set a type

* 😢

* don't cast on x64 targets

* apply code review requests

* fix attributes on expressions

* fix ios

src/platform_impl/macos/window_delegate.rs

@@ -1,3 +1,5 @@
+#![allow(clippy::unnecessary_cast)]
+
 use std::ptr;
 
 use objc2::declare::{Ivar, IvarDrop};