[PATCH] mq: abort cleanly when invalid patch name is given to qguard

[Alexis S. L. Carvalho]

Thus spake Christian Ebert:
> # HG changeset patch
> # User Christian Ebert <blacktrash at gmx.net>
> # Date 1172940853 -3600
> # Node ID 5f7590e2862b853ad5c4829d6f546b850ae28803
> # Parent  ef7c39ae5d4c597db98a7ef4a42941e37a123e84
> mq: abort cleanly when invalid patch name is given to qguard

Pushed to crew-stable, together with a test.

Thanks

Alexis