message: rust: make validate accept AsPtr<[u8]>
diff: mod sys;
  -pub fn validate(input: &[u8]) -> bool {
  - unsafe { sys::fizzy_validate(input.as_ptr(), input.len()) }
  +pub fn validate<T: AsRef<[u8]>>(input: T) -> bool {
  + unsafe { sys::fizzy_validate(input.as_ref().as_ptr(), input.as_ref().len()) }
  }
  #[cfg(test)]
  