fix(wm): pass *const u8 to enum_display_devices

Thanks to @ids1024 for pointing out that the failing system calls were
likely due to optimizations being made with the release profile's
opt-level=3 and to @saethlin for pointing out that in the previous
commit I was returning a pointer to a temporary that was about to be
deallocated.

https://fosstodon.org/@ids1024/111627094548141620
https://hachyderm.io/@saethlin/111627135615930244

With this commit, the display ids are now successfully returned from
calls to EnumDisplayDevicesA on release builds.

komorebi/src/windows_api.rs

@@ -242,13 +242,12 @@ impl WindowsApi {
 
     pub fn enum_display_devices(
         index: u32,
-        lp_device: Option<[u8; 32]>,
+        lp_device: Option<*const u8>,
     ) -> Result<DISPLAY_DEVICEA> {
         #[allow(clippy::option_if_let_else)]
-        let lp_device = if let Some(lp_device) = lp_device {
-            PCSTR::from_raw(lp_device.as_ptr())
-        } else {
-            PCSTR::null()
+        let lp_device = match lp_device {
+            None => PCSTR::null(),
+            Some(lp_device) => PCSTR(lp_device),
         };
 
         let mut display_device = DISPLAY_DEVICEA {

komorebi/src/windows_callbacks.rs

@@ -85,7 +85,8 @@ pub extern "system" fn enum_display_monitor(
                 .to_string();
 
             if clean_name.eq(m.name()) {
-                if let Ok(device) = WindowsApi::enum_display_devices(0, Some(d.DeviceName)) {
+                if let Ok(device) = WindowsApi::enum_display_devices(0, Some(d.DeviceName.as_ptr()))
+                {
                     let id = String::from_utf8_lossy(&device.DeviceID);
                     let clean_id = id.replace('\u{0000}', "");