haskell/network — pull request #99 by kazu-yamamoto (2013-07-19 08:09:51+00:00)
Title: fixing regression of accept4.

accept4 sets a socket non-blocking. So, we don't need to set it again.

I think that ec2cdfe13c267c3aa8752af31f70ba474f8d46c8 causes this regression.