fix(wm): manually close process handles

ZiN on Discord noted that handles returned by OpenProcess must be closed
manually (this is not implemented in the Drop trait for handle, it
seems)

https://learn.microsoft.com/en-us/windows/win32/api/processthreadsapi/nf-processthreadsapi-openprocess#remarks

komorebi/src/window.rs

@@ -383,7 +383,10 @@ impl Window {
 
     pub fn exe(self) -> Result<String> {
         let (process_id, _) = WindowsApi::window_thread_process_id(self.hwnd());
-        WindowsApi::exe(WindowsApi::process_handle(process_id)?)
+        let handle = WindowsApi::process_handle(process_id)?;
+        let exe = WindowsApi::exe(handle);
+        WindowsApi::close_process(handle)?;
+        exe
     }
 
     pub fn class(self) -> Result<String> {

komorebi/src/windows_api.rs

@@ -11,6 +11,7 @@ use color_eyre::Result;
 use windows::core::Result as WindowsCrateResult;
 use windows::core::PCSTR;
 use windows::core::PWSTR;
+use windows::Win32::Foundation::CloseHandle;
 use windows::Win32::Foundation::BOOL;
 use windows::Win32::Foundation::COLORREF;
 use windows::Win32::Foundation::HANDLE;
@@ -560,6 +561,10 @@ impl WindowsApi {
         unsafe { OpenProcess(access_rights, inherit_handle, process_id) }.process()
     }
 
+    pub fn close_process(handle: HANDLE) -> Result<()> {
+        unsafe { CloseHandle(handle) }.ok().process()
+    }
+
     pub fn process_handle(process_id: u32) -> Result<HANDLE> {
         Self::open_process(PROCESS_QUERY_INFORMATION, false, process_id)
     }