patch applied (packages/base): Async-exception safety, and avoid space leaks

[Simon Marlow]

Thu Jul  8 03:31:54 PDT 2010  Simon Marlow <marlowsd at gmail.com>
  * Async-exception safety, and avoid space leaks
  Patch submitted by: Bas van Dijk <v.dijk.bas at gmail.com>
  Modified slightly by me to remove non-functional changes.

    M ./Control/Concurrent/QSemN.hs -11 +13

View patch online:
http://darcs.haskell.org/cgi-bin/darcsweb.cgi?r=packages/base;a=darcs_commitdiff;h=20100708103154-12142-e594d049d16a9ba1b0eb1321c209c461f754f0aa.gz