Add changelog PR link

Author: frangio

CHANGELOG.md

@@ -8,6 +8,7 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 - Added `MSG_WAITALL` to `MsgFlags` in `sys::socket`.
   ([#1079](https://github.com/nix-rust/nix/pull/1079))
 - `From` and `TryFrom` impls for many enums that correspond to libc constants.
+  ([#1088](https://github.com/nix-rust/nix/pull/1088))
 
 ### Changed
 - Support for `ifaddrs` now present when building for Android.
@@ -16,7 +17,9 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 ### Fixed
 ### Removed
 - `Signal::from_c_int`. Use `Signal::try_from` instead.
+  ([#1088](https://github.com/nix-rust/nix/pull/1088))
 - `From<speed_t>` impl for `BaudRate`. Use `BaudRate::try_from` instead.
+  ([#1088](https://github.com/nix-rust/nix/pull/1088))
 
 ## [0.14.1] - 2019-06-06
 ### Added