fix(windows): remove hwnd val checks on 0.35

Small commit to temporarily handle a regression introduced by my changes
when upgrading from 0.34 to 0.35.

Checking for a 0 HWND value results in an Err being propagated in fns
like GetForegroundWindow, while the error message just reads "The
operation completed successfully. (os error 0)".

This behaviour was causing regressions in features such as window
floating which seems to be resolved by removing the 0 HWND check.

komorebi/src/windows_api.rs

@@ -130,11 +130,7 @@ macro_rules! impl_process_windows_crate_integer_wrapper_result {
             $(
                 impl ProcessWindowsCrateResult<$deref> for $input {
                     fn process(self) -> Result<$deref> {
-                        if self.0 == 0 {
-                            Ok(self.0)
-                        } else {
-                            Err(std::io::Error::last_os_error().into())
-                        }
+                        Ok(self.0)
                     }
                 }
             )+