perf: revert encoding.BinaryMarshaler

Signed-off-by: monkey92t <[email protected]>

Author: monkey92t

internal/proto/writer.go

@@ -101,16 +101,15 @@ func (w *Writer) WriteArg(v interface{}) error {
 		return w.bytes(w.numBuf)
 	case time.Duration:
 		return w.int(v.Nanoseconds())
+	case encoding.BinaryMarshaler:
+		b, err := v.MarshalBinary()
+		if err != nil {
+			return err
+		}
+		return w.bytes(b)
 	case net.IP:
 		return w.bytes(v)
 	default:
-		if m, ok := v.(encoding.BinaryMarshaler); ok {
-			b, err := m.MarshalBinary()
-			if err != nil {
-				return err
-			}
-			return w.bytes(b)
-		}
 		return fmt.Errorf(
 			"redis: can't marshal %T (implement encoding.BinaryMarshaler)", v)
 	}