nit in draft-ietf-secsh-connect-25.txt

[Anil Madhavapeddy <anil%recoil.org@localhost>]

In Section 6.10 (Returning Exit Status) of draft-ietf-secsh-connect-25.txt,
the formatting of the "exit-signal" packet is different from the
rest and indented incorrectly.  Breaks my spec-extraction regexp,
hence the motivation to point it out :)

-- 
Anil Madhavapeddy                                 http://anil.recoil.org
University of Cambridge                          http://www.cl.cam.ac.uk