[commit: ghc] master: Bump haddock submodule (8fd7442)

[git at git.haskell.org]

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

On branch  : master
Link       : http://ghc.haskell.org/trac/ghc/changeset/8fd7442efcf6ef0a274f51657633818bd878eb5c/ghc

>---------------------------------------------------------------

commit 8fd7442efcf6ef0a274f51657633818bd878eb5c
Author: Ben Gamari <ben at smart-cactus.org>
Date:   Fri May 12 14:48:03 2017 -0400

    Bump haddock submodule
    
    Fixes lazy IO bug


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8fd7442efcf6ef0a274f51657633818bd878eb5c
 utils/haddock | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/utils/haddock b/utils/haddock
index a0c4790..b7d7b7a 160000
--- a/utils/haddock
+++ b/utils/haddock
@@ -1 +1 @@
-Subproject commit a0c4790e15a2d3fab8d830eee8fcd639fe6d39c9
+Subproject commit b7d7b7acd42cbe424afde3c8a5a59a0706445343