fix issues with PQC-only build

Author: TJ-91

src/librepgp/stream-key.cpp

@@ -891,10 +891,6 @@ pgp_key_pkt_t::parse(pgp_source_t &src)
         return RNP_ERROR_BAD_FORMAT;
     }
 
-#if defined(ENABLE_CRYPTO_REFRESH)
-    std::vector<uint8_t> tmpbuf;
-#endif
-
     pgp_packet_body_t pkt((pgp_pkt_type_t) atag);
     /* Read the packet into memory */
     rnp_result_t res = pkt.read(src);

src/librepgp/stream-parse.cpp

@@ -1623,7 +1623,7 @@ encrypted_try_key(pgp_source_encrypted_param_t *param,
     }
 #endif
 
-#if defined(ENABLE_CRYPTO_REFRESH)
+#if defined(ENABLE_CRYPTO_REFRESH) || defined(ENABLE_PQC)
     /* If AES is forced then salg must be stored plaintext in material */
     sesskey.salg = encmaterial->salg;
     /* check that AES is used when mandated by the standard */

src/librepgp/stream-write.cpp

@@ -617,7 +617,7 @@ encrypted_add_recipient(rnp_ctx_t &              ctx,
 
     /* Encrypt the session key */
     rnp::secure_bytes enckey;
-#if defined(ENABLE_CRYPTO_REFRESH)
+#if defined(ENABLE_CRYPTO_REFRESH) || defined(ENABLE_PQC)
     if ((pkey.version == PGP_PKSK_V3) && do_encrypt_pkesk_v3_alg_id(pkey.alg)) {
         /* for pre-crypto-refresh algorithms, algorithm ID is part of the session key */
         enckey.push_back(pkey.salg);
@@ -644,6 +644,8 @@ encrypted_add_recipient(rnp_ctx_t &              ctx,
     auto material = pgp::EncMaterial::create(pkey.alg);
 #if defined(ENABLE_CRYPTO_REFRESH)
     material->version = pkey.version;
+#endif
+#if defined(ENABLE_PQC) || defined(ENABLE_CRYPTO_REFRESH)
     material->salg = pkey.salg;
 #endif
     if (userkey->alg() == PGP_PKA_ECDH) {