Fix panic on double Close of sqlite piece completion DB

diff --git a/storage/sqlite-piece-completion.go b/storage/sqlite-piece-completion.go
index 196f1e5007e6c3697250540515916c754296ee3f..857b97a2b9243db2acb993fecb0ba6d8c9a74cfc 100644 (file)
--- a/storage/sqlite-piece-completion.go
+++ b/storage/sqlite-piece-completion.go
@@ -64,6 +64,7 @@ func (me *sqlitePieceCompletion) Close() (err error) {
        defer me.mu.Unlock()
        if me.db != nil {
                err = me.db.Close()
+               me.db = nil
        }
        return
 }