Fixed problem with race setup : kart amount would only be considered if you changed it, if you left the default value of 4 you'd be alone

git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/main/branches/irrlicht@3594 178a84e3-b1eb-0310-8ba1-8eac791a3b58

src/gui/state_manager.cpp

@@ -142,6 +142,9 @@ namespace StateManager
             // TODO - if user arrived to this screen by pressing esc from teh enxt, the behaviour below might be incorrect
             // it would be better to restore previously set settings.
             race_manager->setDifficulty( (RaceManager::Difficulty)user_config->getDefaultDifficulty() );
+            
+            SpinnerWidget* kartamount = getCurrentScreen()->getWidget<SpinnerWidget>("aikartamount");
+            race_manager->setNumKarts( kartamount->getValue() + 1 );
         }
         else if(name == "difficulty")
         {