message: Compare GCM decryption result to plaintext from test vectors.
diff: @@ -648,7 +648,8 @@ if ((Environment.IS_WEBCRYPTO_AVAILABLE)) {
  testVector['IV'] + testVector['CT'] + testVector['Tag']);
  const aad = Bytes.fromHex(testVector['AAD']);
  try {
  - await aead.decrypt(ciphertext, aad);
  + const plaintext = await aead.decrypt(ciphertext, aad);
  + assertEquals(Bytes.toHex(plaintext), testVector['PT']);
  } catch (e) {
  fail(e);
  }
  