[commit: ghc] master: Bump unix submodule (25b2c1b)

[git at git.haskell.org]

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

On branch  : master
Link       : http://ghc.haskell.org/trac/ghc/changeset/25b2c1b22d1b7c7dcb89e5f039755e2e45927a0d/ghc

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

commit 25b2c1b22d1b7c7dcb89e5f039755e2e45927a0d
Author: Ben Gamari <ben at smart-cactus.org>
Date:   Tue Mar 21 10:07:44 2017 -0400

    Bump unix submodule


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

25b2c1b22d1b7c7dcb89e5f039755e2e45927a0d
 libraries/unix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libraries/unix b/libraries/unix
index 47bcb47..19aaa0f 160000
--- a/libraries/unix
+++ b/libraries/unix
@@ -1 +1 @@
-Subproject commit 47bcb4751c47e4026a7458f94e542d2c7dbbf92d
+Subproject commit 19aaa0fcca3427e4006a967972eb16a570ca43b1