Adds exit code (0.6 and 0.8) and signal (only in node 0.8) to rack wo…

…rker-end events.

lib/rack.js

@@ -56,8 +56,8 @@ Rack.prototype.start = function () {
 		this.emit("master-start", this);
 
 		cluster.on(worker_exit_event, (function (rack) {
-			return function (worker) {
-				rack.emit("worker-end", worker, rack);
+			return function (worker, code, signal) {
+				rack.emit("worker-end", worker, rack, typeof code != "undefined" ? code : worker.exitCode, signal);
 			};
 		})(this));