message: Remove explicit length type
diff: @@ -1451,19 +1451,12 @@ pub fn derive_setters(_struct: &vkxml::Struct) -> Option<Tokens> {
  if let Some(ref array_type) = field.array {
  if let Some(ref array_size) = field.size {
  if !array_size.starts_with("latexmath") {
  - let length_type;
  let array_size_ident = Ident::from(array_size.to_snake_case().as_str());
  - if array_size_ident.to_string().contains("_count") {
  - length_type = Term::intern("u32");
  - } else {
  - length_type = Term::intern("usize");
  - }
  -
  if param_ty_string == "*const *const c_char" {
  return Some(quote!{
  pub fn #param_ident_short(mut self, #param_ident_short: &'a [*const c_char]) -> #name_builder<'a> {
  self.inner.#param_ident = #param_ident_short.as_ptr();
  - self.inner.#array_size_ident = #param_ident_short.len() as #length_type;
  + self.inner.#array_size_ident = #param_ident_short.len() as _;
  self
  }
  });
  @@ -1488,7 +1481,7 @@ pub fn derive_setters(_struct: &vkxml::Struct) -> Option<Tokens> {
  vkxml::ArrayType::Dynamic => {
  return Some(quote!{
  pub fn #param_ident_short(mut self, #param_ident_short: #slice_param_ty_tokens) -> #name_builder<'a> {
  - self.inner.#array_size_ident = #param_ident_short.len() as #length_type;
  + self.inner.#array_size_ident = #param_ident_short.len() as _;
  self.inner.#param_ident = #param_ident_short#ptr_mutability;
  self
  }
  