Update unix submodule to latest snapshot
[ghc.git] / libraries / unix
index 91b8238..ff1c16d 160000 (submodule)
@@ -1 +1 @@
-Subproject commit 91b82383873b46385d239f2b059f353b11f07e0f
+Subproject commit ff1c16d4ee0c4ca043bd99a5d6741ea2d53e7000