Fix a couple of clang warnings

src/or/circuitbuild.c

@@ -1426,12 +1426,13 @@ circuit_init_cpath_crypto(crypt_path_t *cpath,
 
   tor_assert(digest_len != 0);
   tor_assert(cipher_key_len != 0);
+  const int cipher_key_bits = (int) cipher_key_len * 8;
 
   crypto_digest_add_bytes(cpath->f_digest, key_data, digest_len);
   crypto_digest_add_bytes(cpath->b_digest, key_data+digest_len, digest_len);
 
   cpath->f_crypto = crypto_cipher_new_with_bits(key_data+(2*digest_len),
-                                                cipher_key_len*8);
+                                                cipher_key_bits);
   if (!cpath->f_crypto) {
     log_warn(LD_BUG,"Forward cipher initialization failed.");
     return -1;
@@ -1439,7 +1440,7 @@ circuit_init_cpath_crypto(crypt_path_t *cpath,
 
   cpath->b_crypto = crypto_cipher_new_with_bits(
                                         key_data+(2*digest_len)+cipher_key_len,
-                                        cipher_key_len*8);
+                                        cipher_key_bits);
   if (!cpath->b_crypto) {
     log_warn(LD_BUG,"Backward cipher initialization failed.");
     return -1;

src/test/test_hs_client.c

@@ -130,7 +130,7 @@ helper_get_circ_and_stream_for_test(origin_circuit_t **circ_out,
 static void
 test_e2e_rend_circuit_setup_legacy(void *arg)
 {
-  int retval;
+  ssize_t retval;
   origin_circuit_t *or_circ = NULL;
   connection_t *conn = NULL;