test: relax timing in test-http-exit-delay

This test was originally intended to guard against regressions for
commit 16b59cbc74.

As such, it only needs to ensure that process exit has not been held up
by the date cache timer, which would fire on the next second.

test/simple/test-http-exit-delay.js

@@ -30,16 +30,16 @@ var server = http.createServer(function(req, res) {
     res.end('Success');
   });
 
-  server.close(function() {
+  server.close();
-    start = process.hrtime();
-  });
 });
 
 server.listen(common.PORT, 'localhost', function() {
   var interval_id = setInterval(function() {
-    if (new Date().getMilliseconds() > 100)
+    start = new Date();
+    if (start.getMilliseconds() > 100)
       return;
 
+    console.log(start.toISOString());
     var req = http.request({
       'host': 'localhost',
       'port': common.PORT,
@@ -53,8 +53,9 @@ server.listen(common.PORT, 'localhost', function() {
 });
 
 process.on('exit', function() {
-  var d = process.hrtime(start);
+  var end = new Date();
-  assert.equal(d[0], 0);
+  console.log(end.toISOString());
-  assert(d[1] / 1e9 < 0.03);
+  assert.equal(start.getSeconds(), end.getSeconds());
+  assert(end.getMilliseconds() < 900);
   console.log('ok');
 });