Update to windows-sys 0.59 (#4098)

src/platform_impl/windows/monitor.rs

@@ -63,12 +63,10 @@ impl VideoModeHandle {
 #[derive(Debug, Clone, Eq, PartialEq, Hash, PartialOrd, Ord)]
 pub struct MonitorHandle(HMONITOR);
 
-// Send is not implemented for HMONITOR, we have to wrap it and implement it manually.
-// For more info see:
-// https://github.com/retep998/winapi-rs/issues/360
-// https://github.com/retep998/winapi-rs/issues/396
+// Send and Sync are not implemented for HMONITOR, we have to wrap it and implement them manually.
 
 unsafe impl Send for MonitorHandle {}
+unsafe impl Sync for MonitorHandle {}
 
 unsafe extern "system" fn monitor_enum_proc(
     hmonitor: HMONITOR,
@@ -85,7 +83,7 @@ pub fn available_monitors() -> VecDeque<MonitorHandle> {
     let mut monitors: VecDeque<MonitorHandle> = VecDeque::new();
     unsafe {
         EnumDisplayMonitors(
-            0,
+            ptr::null_mut(),
             ptr::null(),
             Some(monitor_enum_proc),
             &mut monitors as *mut _ as LPARAM,