[GHC] #13545: Remove duplication between lookupSubBndrOcc and lookupExportChild

[GHC]

#13545: Remove duplication between lookupSubBndrOcc and lookupExportChild
-------------------------------------+-------------------------------------
        Reporter:  mpickering        |                Owner:  mpickering
            Type:  task              |               Status:  new
        Priority:  normal            |            Milestone:  8.4.1
       Component:  Compiler          |              Version:  8.0.1
      Resolution:                    |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
-------------------------------------+-------------------------------------

Comment (by Matthew Pickering <matthewtpickering@…>):

 In [changeset:"a3873e8cdec8fc966e91ebe024808376a4077e2b/ghc" a3873e8/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="a3873e8cdec8fc966e91ebe024808376a4077e2b"
 RnEnv refactoring

 Summary: Lots of refactoring in RnEnv to reduce code duplication.

 Reviewers: austin, bgamari

 Reviewed By: bgamari

 Subscribers: rwbarton, thomie

 GHC Trac Issues: #13545

 Differential Revision: https://phabricator.haskell.org/D3507
 }}}

--
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/13545#comment:9>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler