Update the NSS bug number for the invalid read when AES-CBC decrypting.

R=eroman@chromium.org
BUG=300681
TEST=none

Review URL: https://codereview.chromium.org/25637004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@226530 0039d316-1c4b-4281-b951-d872f2087c98

crypto/encryptor_nss.cc

@@ -101,7 +101,7 @@ bool Encryptor::Decrypt(const base::StringPiece& ciphertext,
   if (ciphertext.size() % AES_BLOCK_SIZE != 0) {
     // Decryption will fail if the input is not a multiple of the block size.
     // PK11_CipherOp has a bug where it will do an invalid memory access before
-    // the start of the input, so avoid calling it. (Possibly NSS bug 921687).
+    // the start of the input, so avoid calling it. (NSS bug 922780).
     plaintext->clear();
     return false;
   }