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

hg
hg -q
hg help
hg -q help
hg add -h
hg add --skjdfks
hg help diff
hg help status
hg -q help status
hg help foo
hg skjdfks

exit 0