[PATCH 2 of 2 STABLE] revset: fix infinite alias expansion detection

[Matt Mackall]

On Sat, 2012-05-19 at 17:28 +0200, Patrick Mezard wrote:
> # HG changeset patch
> # User Patrick Mezard <patrick at mezard.eu>
> # Date 1337440795 -7200
> # Branch stable
> # Node ID 6dfbf09979d0e08ef54a0766def331f72c84610c
> # Parent  7aea07a5f3d2824b17f26bbe34a325ab400d2a64
> revset: fix infinite alias expansion detection

These are queued for stable, thanks.

-- 
Mathematics is the supreme nostalgia of our time.