patch applied (ghc): Make DsMeta almost warning-free

[Ian Lynagh]

Sun May  4 05:57:42 PDT 2008  Ian Lynagh <igloo at earth.li>
  * Make DsMeta almost warning-free
  GHC claims that OccName is unused, but it is wrong.

    M ./compiler/deSugar/DsMeta.hs -43 +125

View patch online:
http://darcs.haskell.org/ghc/_darcs/patches/20080504125742-3fd76-2aca4c92ff6f4d4a02b67a670eb3268186185210.gz