Fix enum in HPKE test

Author: Legrandin

lib/Crypto/SelfTest/Protocol/test_HPKE.py

@@ -461,7 +461,7 @@ def test_hpke_unseal(self):
                     psk = unhexlify(vector["psk_id"]), unhexlify(vector["psk"])
 
                 receiver_hpke = HPKE.new(receiver_key=receiver_priv,
-                                         aead_id=aead_id,
+                                         aead_id=HPKE.AEAD(aead_id),
                                          enc=encap_key,
                                          sender_key=sender_pub,
                                          psk=psk,