fix typo: pass pre-computed parameters to the underlying signature function; thanks to Lucas Newman

crypto/ecdsa/ecs_sign.c

@@ -69,7 +69,7 @@ ECDSA_SIG *ECDSA_do_sign_ex(const unsigned char *dgst, int dlen,
 	ECDSA_DATA *ecdsa = ecdsa_check(eckey);
 	if (ecdsa == NULL)
 		return NULL;
-	return ecdsa->meth->ecdsa_do_sign(dgst, dlen, NULL, NULL, eckey);
+	return ecdsa->meth->ecdsa_do_sign(dgst, dlen, kinv, rp, eckey);
 }
 
 int ECDSA_sign(int type, const unsigned char *dgst, int dlen, unsigned char