Fix CHANGELOG

Author: nobody

CHANGELOG.md

@@ -5,6 +5,11 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased]
 ### Added
+- Added support of CString type in `setsockopt`.
+  ([#972](https://github.com/nix-rust/nix/pull/972))
+- Added option `TCP_CONGESTION` in `setsockopt`.
+  ([#972](https://github.com/nix-rust/nix/pull/972))
+
 ### Changed
 ### Fixed
 ### Removed
@@ -47,10 +52,6 @@ This project adheres to [Semantic Versioning](http://semver.org/).
   ([#975](https://github.com/nix-rust/nix/pull/975))
 - Added `Error::as_errno`.
   ([#977](https://github.com/nix-rust/nix/pull/977))
-- Added support of CString type in `setsockopt`.
-  ([#972](https://github.com/nix-rust/nix/pull/972))
-- Added option `TCP_CONGESTION` in `setsockopt`.
-  ([#972](https://github.com/nix-rust/nix/pull/972))
 
 ### Changed
 - Increased required Rust version to 1.24.1