Updated previous patch with douglas's input. (still bug 323817

Truncation of hashes for ECDSA should be done at bit level, not octet level).
r= vipul r=douglas

security/nss/lib/freebl/ec.c

@@ -879,7 +879,6 @@ ECDSA_VerifyDigest(ECPublicKey *key, const SECItem *signature,
     mp_int n;
     mp_err err = MP_OKAY;
     ECParams *ecParams = NULL;
-    SECItem localDigest;
     SECItem pointC = { siBuffer, NULL, 0 };
     int slen;       /* length in bytes of a half signature (r or s) */
     int flen;       /* length in bytes of the field size */