message: Fix ARM build
  On ARM, c_char is unsigned.
diff: @@ -1335,7 +1335,7 @@ pub fn derive_debug(_struct: &vkxml::Struct, union_types: &HashSet<&str>) -> Opt
  let debug_value = if is_static_array(field) && field.basetype == "char" {
  quote! {
  &unsafe {
  - ::std::ffi::CStr::from_ptr(self.#param_ident.as_ptr() as *const i8)
  + ::std::ffi::CStr::from_ptr(self.#param_ident.as_ptr() as *const c_char)
  }
  }
  } else if param_ident.as_ref().contains("pfn") {
  