Fix TestServer/TestXboxServer

A recent change to xbox makes it reset after every request.
This broke a test which was testing that threads only get
reset when they ask to be reset.

hphp/test/test_server.cpp

@@ -703,7 +703,7 @@ bool TestServer::TestXboxServer() {
         "int(5)\n"
         "int(0)\n"
         "int(0)\n"
-        "int(2)\n",
+        "int(0)\n",
         "string?main=1");
 
   return true;