[commit: ghc] ghc-8.2: Bump unix submodule to 2.7.2.2 (889b22e)

[git at git.haskell.org]

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

On branch  : ghc-8.2
Link       : http://ghc.haskell.org/trac/ghc/changeset/889b22ef8905fb4c83f63ae1c617cb977eeddc44/ghc

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

commit 889b22ef8905fb4c83f63ae1c617cb977eeddc44
Author: Ben Gamari <ben at smart-cactus.org>
Date:   Wed Jul 19 18:32:56 2017 -0400

    Bump unix submodule to 2.7.2.2


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

889b22ef8905fb4c83f63ae1c617cb977eeddc44
 libraries/unix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libraries/unix b/libraries/unix
index eb5fc94..fcaa530 160000
--- a/libraries/unix
+++ b/libraries/unix
@@ -1 +1 @@
-Subproject commit eb5fc942f8f570e754bba0f57a8fdaec3400194f
+Subproject commit fcaa530a8fdd3897353bdf246752a91d675aad46