one more 'listening' race condition

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

@@ -26,11 +26,13 @@ var srv = net.createServer(function(c) {
         c.end();
     });
 });
-srv.listen(common.PORT, '127.0.0.1');
 
 var gotUpgrade = false;
-var hc = http.createClient(common.PORT, '127.0.0.1');
-hc.addListener('upgrade', function(res, socket, upgradeHead) {
+
+srv.listen(common.PORT, '127.0.0.1', function () {
+
+  var hc = http.createClient(common.PORT, '127.0.0.1');
+  hc.addListener('upgrade', function(res, socket, upgradeHead) {
       // XXX: This test isn't fantastic, as it assumes that the entire response
       //      from the server will arrive in a single data callback
       assert.equal(upgradeHead, 'nurtzo');
@@ -46,8 +48,9 @@ hc.addListener('upgrade', function(res, socket, upgradeHead) {
       srv.close();
 
       gotUpgrade = true;
+  });
+  hc.request('GET', '/').end();
 });
-hc.request('GET', '/').end();
 
 process.addListener('exit', function() {
     assert.ok(gotUpgrade);