net_uv: Delay listen emit

lib/net_uv.js

@@ -404,7 +404,9 @@ function listenip(self, ip, port) {
     self.emit('error', errnoException(errno, 'listen'));
   } else {
     self._handle.listen(self._backlog || 128);
-    self.emit('listening');
+    process.nextTick(function() {
+      self.emit('listening');
+    });
   }
 }
 
@@ -422,7 +424,9 @@ Server.prototype.listen = function() {
     // Don't bind(). OS will assign a port with INADDR_ANY.
     // The port can be found with server.address()
     this._handle.listen(self._backlog || 128);
-    this.emit('listening');
+    process.nextTick(function() {
+      self.emit('listening');
+    });
 
   } else if (typeof arguments[1] == 'undefined') {
     // The first argument is the port, no IP given.