fix syntax errorr

Author: MikailBag

src/windows/spawn.rs

@@ -212,7 +212,7 @@ pub(in crate::windows) fn spawn(
             TRUE,
             creation_flags,
             // TEMP DEBUG
-            std::ptr::null_mut()
+            std::ptr::null_mut(),
             //env.as_mut_ptr().cast(),
             cwd.as_ptr(),
             (&mut startup_info as *mut STARTUPINFOEXW).cast(),