try fix leak++

diff --git a/encoding/blockchain/blockchain.go b/encoding/blockchain/blockchain.go
index 3d51b58..513255d 100644 (file)
--- a/encoding/blockchain/blockchain.go
+++ b/encoding/blockchain/blockchain.go
@@ -88,7 +88,9 @@ func ReadVarstr31(r *Reader) ([]byte, error) {
        if int(l) > len(r.buf) {
                return nil, io.ErrUnexpectedEOF
        }
-       str := r.buf[:l]
+
+       str := make([]byte, l)
+       copy(str, r.buf)
        r.buf = r.buf[l:]
        return str, nil
 }