proper initialization of rsa private key

src/libstrongswan/crypto/rsa/rsa_private_key.c

@@ -575,6 +575,8 @@ static private_rsa_private_key_t *rsa_private_key_create_empty(void)
 	this->rsasp1 = rsadp; /* same algorithm */
 	this->compute_prime = compute_prime;
 	
+	this->keyid = chunk_empty;
+	
 	return this;
 }