[GHC] #15041: rnIfaceBndr implementation in RnModIface looks incorrect

[GHC]

#15041: rnIfaceBndr implementation in RnModIface looks incorrect
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           Reporter:  mpickering     |             Owner:  (none)
               Type:  bug            |            Status:  new
           Priority:  normal         |         Milestone:  8.6.1
          Component:  Compiler       |           Version:  8.2.2
           Keywords:  backpack       |  Operating System:  Unknown/Multiple
       Architecture:                 |   Type of failure:  None/Unknown
  Unknown/Multiple                   |
          Test Case:                 |        Blocked By:
           Blocking:                 |   Related Tickets:
Differential Rev(s):                 |         Wiki Page:
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 {{{
 rnIfaceBndr :: Rename IfaceBndr
 rnIfaceBndr (IfaceIdBndr (fs, ty)) = IfaceIdBndr <$> ((,) fs <$>
 rnIfaceType ty)
 rnIfaceBndr (IfaceTvBndr tv_bndr) = IfaceIdBndr <$> rnIfaceTvBndr tv_bndr
 }}}

 This is the implementation currently. Notice in the second branch that an
 `IfaceTvBndr` is converted to an `IfaceIdBndr`. Should it instead be
 `IfaceTvBndr`?

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/15041>
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