patch applied (ghc): Fix a bug in eqPatType

[Ian Lynagh]

Fri Jun  6 11:46:31 PDT 2008  Ian Lynagh <igloo at earth.li>
  * Fix a bug in eqPatType
  One of the conditions we were checking was
      t2 `eqPatLType` t2
  rather than
      t1 `eqPatLType` t2

    M ./compiler/typecheck/TcClassDcl.lhs -2 +2

View patch online:
http://darcs.haskell.org/ghc/_darcs/patches/20080606184631-3fd76-ae84227e5438e1474a4818a6a382ac4401f59dfa.gz