bundle: quick fix to ludicrous performance penalty
We tried a `hg bundle --base ':(tip^)' --rev 'all()'` on a large repository and
it spent 3 minutes on this 2 list comprehensions. This change remove this cost.
There are still a lot of low hanging fruits as the command still take 30
seconds. However this is a trivial patch with a massive speedup so I'll just
sent it.
{
"conduit_uri": "https://phab.mercurial-scm.org/api",
"phabricator.uri": "https://phab.mercurial-scm.org/",
"repository.callsign": "HG",
"arc.land.onto.default": "@",
"base": "hg:.^"
}