Update cbor-gen to latest master

paych/cbor_gen.go

@@ -28,6 +28,10 @@ func (t *VoucherInfo) MarshalCBOR(w io.Writer) error {
 	}
 
 	// t.Proof ([]uint8) (slice)
+	if len(t.Proof) > cbg.ByteArrayMaxLen {
+		return xerrors.Errorf("Byte array in field t.Proof was too long")
+	}
+
 	if _, err := w.Write(cbg.CborEncodeMajorType(cbg.MajByteString, uint64(len(t.Proof)))); err != nil {
 		return err
 	}
@@ -123,6 +127,10 @@ func (t *ChannelInfo) MarshalCBOR(w io.Writer) error {
 	}
 
 	// t.Vouchers ([]*paych.VoucherInfo) (slice)
+	if len(t.Vouchers) > cbg.MaxLength {
+		return xerrors.Errorf("Slice value in field t.Vouchers was too long")
+	}
+
 	if _, err := w.Write(cbg.CborEncodeMajorType(cbg.MajArray, uint64(len(t.Vouchers)))); err != nil {
 		return err
 	}