Merge pull request WireGuard#11 from amnezia-vpn/fixbug/xcode-16-build-fix

Missing import added

Author: pokamest

Sources/WireGuardKitC/WireGuardKitC.h

@@ -1,6 +1,7 @@
 // SPDX-License-Identifier: MIT
 // Copyright © 2018-2023 WireGuard LLC. All Rights Reserved.
 
+#include <sys/types.h>
 #include "key.h"
 #include "x25519.h"