[commit: ghc] ghc-8.0: Update pretty submodule (fc88685)

[git at git.haskell.org]

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

On branch  : ghc-8.0
Link       : http://ghc.haskell.org/trac/ghc/changeset/fc88685b06c5dc859e3e5a81ef12ad91aba302f3/ghc

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commit fc88685b06c5dc859e3e5a81ef12ad91aba302f3
Author: Ben Gamari <ben at smart-cactus.org>
Date:   Wed Apr 6 21:57:23 2016 +0200

    Update pretty submodule


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fc88685b06c5dc859e3e5a81ef12ad91aba302f3
 libraries/pretty | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libraries/pretty b/libraries/pretty
index 9fd5f2b..56bc78e 160000
--- a/libraries/pretty
+++ b/libraries/pretty
@@ -1 +1 @@
-Subproject commit 9fd5f2b596bdfbce0414f973009b579d5d2430fa
+Subproject commit 56bc78e2c2cfcc850f6fec87fe79743750d4c8b4