[GHC] #12879: (xs -> xs) wrongly suggests TypeApplications

[GHC]

#12879: (xs -> xs) wrongly suggests TypeApplications
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        Reporter:  Iceland_jack      |                Owner:
            Type:  bug               |               Status:  new
        Priority:  normal            |            Milestone:
       Component:  Compiler          |              Version:  8.0.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
 Type of failure:  Poor/confusing    |  Unknown/Multiple
  error message                      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):  Phab:D2877
       Wiki Page:                    |
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Changes (by zyla):

 * differential:   => Phab:D2877


Comment:

 I submitted a patch: https://phabricator.haskell.org/D2877

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12879#comment:3>
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