[commit: ghc] master: bump haddock submodule (4efd1b4)

[git at git.haskell.org]

Repository : ssh://git@git.haskell.org/ghc

On branch  : master
Link       : http://ghc.haskell.org/trac/ghc/changeset/4efd1b487e10c8cdbc1bca10c45f0887642a5c48/ghc

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commit 4efd1b487e10c8cdbc1bca10c45f0887642a5c48
Author: Alp Mestanogullari <alp at well-typed.com>
Date:   Fri Nov 16 09:50:27 2018 +0100

    bump haddock submodule
    
    Summary:
    ae2c9b40f5b6bf272251d1f4107c60003f541b62 introduced some changes that
    broke haddock, [1] fixed them and this patch bumps the haddock submodule
    to include the fixes.
    
    [1]: https://github.com/haskell/haddock/pull/970
    
    Test Plan: build haddock (make or hadrian)
    
    Reviewers: bgamari, AndreasK
    
    Reviewed By: AndreasK
    
    Subscribers: osa1, AndreasK, rwbarton, carter
    
    GHC Trac Issues: #15900
    
    Differential Revision: https://phabricator.haskell.org/D5341


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4efd1b487e10c8cdbc1bca10c45f0887642a5c48
 utils/haddock | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/utils/haddock b/utils/haddock
index f345505..0b37998 160000
--- a/utils/haddock
+++ b/utils/haddock
@@ -1 +1 @@
-Subproject commit f3455051b59c99d26e0cf040be45f5916463ae55
+Subproject commit 0b379984f7898ab0656f71f05fb0163a6a2ddb2c