Changelog entry for #228

Author: snoyberg

changelog.md

@@ -1,5 +1,9 @@
 # Changelog for [`process` package](http://hackage.haskell.org/package/process)
 
+## Unreleased
+
+* posix: Ensure that `errno` is set after `posix_spawnp` fails [#228](https://github.com/haskell/process/pull/228)
+
 ## 1.6.13.2 *July 2021*
 
 * `posix_spawn`: Don't attempt to `dup2` identical fds [#214](https://github.com/haskell/process/pull/214)