[PATCH] keyword: use context manager for rollback locking

[Yuya Nishihara]

On Tue, 20 Jun 2017 13:16:08 +0100, Christian Ebert wrote:
> # HG changeset patch
> # User Christian Ebert <blacktrash at gmx.net>
> # Date 1497959496 -3600
> #      Tue Jun 20 12:51:36 2017 +0100
> # Node ID 8d47bf86d05de2bff7cd2b3abeb7ae1de66d2848
> # Parent  661025fd3e1cd5d5e2dee12b7f64312d6cd48a0b
> keyword: use context manager for rollback locking

Queued, thanks.