sumdb: remove redundant type conversion

Change-Id: I01f5804ab0bc0d41192e55c7f0523178108a5e94
GitHub-Last-Rev: 14e3b91
GitHub-Pull-Request: #13
Reviewed-on: https://go-review.googlesource.com/c/mod/+/428978
Auto-Submit: Bryan Mills <bcmills@google.com>
Run-TryBot: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>

sumdb/note/example_test.go

@@ -93,7 +93,7 @@ func ExampleSign_add_signatures() {
 	}
 	verifiers := note.VerifierList(verifier)
 
-	n, err := note.Open([]byte(msg), verifiers)
+	n, err := note.Open(msg, verifiers)
 	if err != nil {
 		fmt.Println(err)
 		return

sumdb/note/note_test.go

@@ -178,7 +178,7 @@ func newSignerFromEd25519Seed(name string, seed []byte) (Signer, error) {
 
 	s := &signer{
 		name: name,
-		hash: uint32(hash),
+		hash: hash,
 		sign: func(msg []byte) ([]byte, error) {
 			return ed25519.Sign(priv, msg), nil
 		},

sumdb/test.go

@@ -107,7 +107,7 @@ func (s *TestServer) Lookup(ctx context.Context, m module.Version) (int64, error
 		s.lookup = make(map[string]int64)
 	}
 	s.lookup[key] = id
-	hashes, err := tlog.StoredHashesForRecordHash(id, tlog.RecordHash([]byte(data)), s.hashes)
+	hashes, err := tlog.StoredHashesForRecordHash(id, tlog.RecordHash(data), s.hashes)
 	if err != nil {
 		panic(err)
 	}