[PATCH stable] archival: don't set gzip filename header when there's no filename

[Matt Mackall]

On Tue, 2010-12-07 at 19:55 +1100, Brodie Rao wrote:
> # HG changeset patch
> # User Brodie Rao <brodie at bitheap.org>
> # Date 1291711673 -39600
> # Branch stable
> # Node ID 9254f1fe8d7198959b13cdc3d88d2c4fde89d133
> # Parent  5e51254ad4d4c80669f462e310b2677f2b3c54a7
> archival: don't set gzip filename header when there's no filename

Queued, thanks.

-- 
Mathematics is the supreme nostalgia of our time.