From af58497587a7cc7812e81d850db92f29c0f8db6f Mon Sep 17 00:00:00 2001
From: Tnze <cjd001113@outlook.com>
Date: Tue, 14 Jun 2022 13:57:01 +0800
Subject: [PATCH] BitStoreage.Fix check 0 bits now

---
 level/bitstorage.go | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/level/bitstorage.go b/level/bitstorage.go
index 52aede9..62c4e32 100644
--- a/level/bitstorage.go
+++ b/level/bitstorage.go
@@ -184,6 +184,12 @@ func (b *BitStorage) WriteTo(w io.Writer) (int64, error) {
 }
 
 func (b *BitStorage) Fix(bits int) error {
+	if bits == 0 {
+		b.mask = 0
+		b.bits = 0
+		b.valuesPerLong = 0
+		return nil
+	}
 	b.mask = 1<<bits - 1
 	b.bits = bits
 	b.valuesPerLong = 64 / bits