Panic: called `Option::unwrap()` on a `None` value

Description

Winit: 0.30.13

winit::platform_impl::windows:⌨️:impl$1::process_message::closure$0 (keyboard.rs:161)

Our user reported a crash that seems to hit:

                WM_DEADCHAR | WM_SYSDEADCHAR => {
                    let pending_token = self.pending.add_pending();
                    *result = ProcResult::Value(0);
                    // At this point, we know that there isn't going to be any more events related
                    // to this key press
                    let event_info = self.event_info.lock().unwrap().take().unwrap(); // THIS
                    let ev = event_info.finalize();
                    MatchResult::MessagesToDispatch(self.pending.complete_pending(
                        pending_token,
                        MessageAsKeyEvent { event: ev, is_synthetic: false },
                    ))
                },

I'm not sure what to do about it, but the lib should not crash on a key press.

Windows version

windows 10.0.19045

Winit version

0.30.13

Start at the WM_DEADCHAR/WM_SYSDEADCHAR branch in keyboard.rs:161 and trace how event_info is populated before the unwrap. Reproduce or investigate the Windows 10 key-press path, then verify that the reported case no longer panics when event_info is absent and add coverage for that behavior.