patch applied (ghc): Cast some more nats to StgWord to be on the safe side

[Simon Marlow]

Thu Jun 24 03:57:00 PDT 2010  Simon Marlow <marlowsd at gmail.com>
  * Cast some more nats to StgWord to be on the safe side
  And add a comment about the dangers of int overflow

    M ./rts/sm/BlockAlloc.c -3 +13

View patch online:
http://darcs.haskell.org/cgi-bin/darcsweb.cgi?r=ghc;a=darcs_commitdiff;h=20100624105700-12142-89ef4f6302d805c3ade71d3fc2241cbab4e37237.gz