patch applied (ghc): fix a warning

[Simon Marlow]

Thu Nov  1 08:02:28 PDT 2007  Simon Marlow <simonmar at microsoft.com>
  * fix a warning

    M ./rts/sm/Scav.c-inc -1 +2

View patch online:
http://darcs.haskell.org/ghc/_darcs/patches/20071101150228-760e2-6d303a8de0d9a2ce47d414147200b975d0e2a253.gz