table: fix NewBitmap's size calculation

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>

1 files changed, 1 insertions, 1 deletions

diff --git a/table/path.go b/table/path.go
index 10b33448..65c33a26 100644
--- a/table/path.go
+++ b/table/path.go
@@ -42,7 +42,7 @@ func (b Bitmap) GetFlag(i uint) bool {
 }
 
 func NewBitmap(size int) Bitmap {
-	return Bitmap(make([]uint64, size/64+1))
+	return Bitmap(make([]uint64, (size+64-1)/64))
 }
 
 type originInfo struct {