Remove useless variable assignments in util.opener. The original idea might have been to prevent circular references, but as this assignment would have created another reference, this makes no difference.

#!/bin/sh

mkdir t
cd t
hg init
echo a > a
hg add a
hg commit -m test -d "1000000 0"
rm .hg/requires
hg tip
echo indoor-pool > .hg/requires
hg tip

true