Fix race conditions in test-http-upgrade-client2

test/simple/test-http-upgrade-client2.js

@@ -12,9 +12,11 @@ server.on('upgrade', function(req, socket, head) {
     socket.end();               
   });
 });
-server.listen(8000);
 
-var client = http.createClient(8000);
+
+server.listen(common.PORT, function () {
+
+  var client = http.createClient(common.PORT);
 
   function upgradeRequest(fn) {
     var request = client.request('GET', '/', {
@@ -59,6 +61,8 @@ upgradeRequest(function() {
     });
   });
 
+});
+
 process.on('exit', function () {
   assert.equal(2, successCount);
 });