Additional include required in WireGuardKitC with latest Xcode v16

[daniel-wetter]

Summary

In the WireGuardKitC an #include is missing when compiling in the latest Xcode v16. Declaration of u_int32_t, u_char and u_int16_t require an explicit import of sys/types.h.

Add
#include "sys/types.h"

to WireGuardKitC to fix the problem.

Steps to reproduce

Build the Demo app on a upgraded macOS with Xcode 16

What is the current bug behavior?

Demo and WireGuardKitC code does not compile

What is the expected correct behavior?

No compiler warnings

Relevant logs and/or screenshots

Declaration of 'u_int32_t' must be imported from module 'DarwinFoundation.unsigned_types.u_int32_t' before it is required

Possible fixes suggested remediation

Add
#include "sys/types.h"

to WireGuardKitC to fix the problem.