Try to fix speedy end controller in network race

src/karts/controller/end_controller.cpp

@@ -104,7 +104,6 @@ EndController::EndController(AbstractKart *kart,
 #ifdef AI_DEBUG
     m_debug_sphere = irr_driver->getSceneManager()->addSphereSceneNode(1);
 #endif
-    m_kart->setSlowdown(MaxSpeed::MS_DECREASE_AI, 0.3f, 2);
 
     // Set the name of the previous controller as this controller name, otherwise
     // we get the incorrect name when printing statistics in profile mode.
@@ -195,6 +194,9 @@ void EndController::update(int ticks)
         m_controls->setBrake(m_kart->getSpeed()>0);
         return;
     }
+    // Keep update slow down in case for network rewind overwrite it
+    m_kart->setSlowdown(MaxSpeed::MS_DECREASE_AI, 0.3f, 2);
+
     /*Get information that is needed by more than 1 of the handling funcs*/
     //Detect if we are going to crash with the track and/or kart
     calcSteps();