[GHC] #8428: Incorrect type formatting in error messages

[GHC]

#8428: Incorrect type formatting in error messages
-------------------------------+-------------------------------------------
        Reporter:  klao        |            Owner:  monoidal
            Type:  bug         |           Status:  patch
        Priority:  normal      |        Milestone:
       Component:  Compiler    |          Version:  7.6.3
      Resolution:              |         Keywords:
Operating System:              |     Architecture:  Unknown/Multiple
  Unknown/Multiple             |       Difficulty:  Easy (less than 1 hour)
 Type of failure:              |       Blocked By:
  None/Unknown                 |  Related Tickets:
       Test Case:              |
        Blocking:              |
-------------------------------+-------------------------------------------

Comment (by Krzysztof Gogolewski <krz.gogolewski@?>):

 In [changeset:"a83652ed4aee321063c17df1ad8560712b33103a/ghc"]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="a83652ed4aee321063c17df1ad8560712b33103a"
 Show parentheses when printing type (forall x. T1) T2 (#8428)

 Patch by klao
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8428#comment:3>
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