xdiff: silence a 32-bit shift warning on Windows
It's probably harmless, but:
warning C4334: '<<' : result of 32-bit shift implicitly converted to 64 bits
(was 64-bit shift intended?)
Adding a 'ULL' suffix to 1 also works, but I doubt that's portable.
{
"conduit_uri": "https://phab.mercurial-scm.org/api",
"repository.callsign": "HG",
"arc.land.onto.default": "@",
"base": "hg:.^"
}