Grab light in the correct place, fixed all leaking of lights

src/graphics/irr_driver.cpp

@@ -2664,8 +2664,6 @@ scene::ISceneNode *IrrDriver::addLight(const core::vector3df &pos,
         else
             light = new SunNode(m_scene_manager, parent, r, g, b);
 
-        light->grab();
-
         light->setPosition(pos);
         light->updateAbsolutePosition();
 
@@ -2695,9 +2693,7 @@ scene::ISceneNode *IrrDriver::addLight(const core::vector3df &pos,
 
 void IrrDriver::clearLights()
 {
-    u32 i;
-    const u32 max = (int)m_lights.size();
-    for (i = 0; i < max; i++)
+    for (unsigned int i = 0; i < m_lights.size(); i++)
     {
         m_lights[i]->drop();
     }

src/karts/kart_gfx.cpp

@@ -80,6 +80,13 @@ KartGFX::KartGFX(const AbstractKart *kart)
     m_skidding_light_2->setName( ("skidding emitter 2 (" + m_kart->getIdent() 
                                                          + ")").c_str() );
 
+    if (CVS->isGLSL())
+    {
+        m_nitro_light->grab();
+        m_skidding_light_1->grab();
+        m_skidding_light_2->grab();
+    }
+
     // Create particle effects
     Vec3 rear_left(kart->getWheelGraphicsPosition(3).getX(), 0.05f,
                    kart->getWheelGraphicsPosition(3).getZ()-0.1f    );

src/tracks/track.cpp

@@ -1868,8 +1868,10 @@ void Track::loadTrackModel(bool reverse_track, unsigned int mode_id)
         sun->getLightData().SpecularColor = m_sun_specular_color;
     }
     else
+    {
         irr_driver->createSunInterposer();
-
+        m_sun->grab();
+    }
 
     createPhysicsModel(main_track_count);