Fix crash when running a GP with a track with moving physical objects

in it at the end (e.g. tux tollway).


git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/trunk/supertuxkart@1458 178a84e3-b1eb-0310-8ba1-8eac791a3b58

src/gui/grand_prix_ending.cpp

@@ -157,9 +157,9 @@ GrandPrixEnd::GrandPrixEnd()
 
     //FIXME: this is taken from RaceMode::exit_race,
     //this should be organized better.
+    scene->clear();
     delete world;
     world = 0;
-    scene->clear();
     race_manager->m_active_race = false;
 
 }