fix a bug that was making the position updates protocol do too much updates (normally it's 1 per second

git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/main/branches/hilnius@13271 178a84e3-b1eb-0310-8ba1-8eac791a3b58

src/network/protocols/kart_update_protocol.cpp

@@ -67,8 +67,9 @@ void KartUpdateProtocol::update()
 {
     static double time = 0;
     double current_time = Time::getRealTime();
-    if (current_time > time + 1) // 1 updates per second
+    if (current_time > time + 1.0) // 1 updates per second
     {
+        time = current_time;
         if (m_listener->isServer())
         {
             NetworkString ns;