Call explicity close in _writer to avoid fd leakage because isn't
called on Queue.close()
[YOCTO #10873]
(Bitbake rev: 12dfac442d2d5674198485fbeb708a01d215c576)
Signed-off-by: Aníbal Limón <anibal.limon@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>