liburcu: 0.15.4 -> 0.15.5

Changes: https://raw.githubusercontent.com/urcu/userspace-rcu/v0.15.5/ChangeLog

pkgs/by-name/li/liburcu/package.nix

@@ -3,15 +3,16 @@
   stdenv,
   fetchurl,
   perl,
+  gitUpdater,
 }:
 
 stdenv.mkDerivation rec {
-  version = "0.15.4";
+  version = "0.15.5";
   pname = "liburcu";
 
   src = fetchurl {
     url = "https://lttng.org/files/urcu/userspace-rcu-${version}.tar.bz2";
-    hash = "sha256-EaFKdmCsm6nAu9Oy2BcYUj0n3GyKnfq9XkAbQGZz7jo=";
+    hash = "sha256-sveHqKg1EsMlmecc2rzFExRklHuCAUiWvRFBOy14LeE=";
   };
 
   outputs = [
@@ -27,6 +28,11 @@ stdenv.mkDerivation rec {
   preCheck = "patchShebangs tests/unit";
   doCheck = true;
 
+  passthru.updateScript = gitUpdater {
+    url = "https://git.lttng.org/userspace-rcu.git";
+    rev-prefix = "v";
+  };
+
   meta = {
     description = "Userspace RCU (read-copy-update) library";
     homepage = "https://lttng.org/urcu";