message: Initialize Jubjub parameters up front
diff: @@ -34,6 +34,9 @@ pub extern "system" fn librustzcash_init_zksnark_params(
  output_path: *const c_char,
  sprout_path: *const c_char,
  ) {
  + // Initialize jubjub parameters here
  + lazy_static::initialize(&JUBJUB);
  +
  // These should be valid CStr's, but the decoding may fail on Windows
  // so we may need to use OSStr or something.
  let spend_path = unsafe { CStr::from_ptr(spend_path) }
  