The custom gfx tooltip must be updated when the slider is

git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/main/trunk@13409 178a84e3-b1eb-0310-8ba1-8eac791a3b58

src/states_screens/options_screen_video.cpp

@@ -298,8 +298,6 @@ void OptionsScreenVideo::init()
         gfx->setDeactivated();
         getWidget<ButtonWidget>("custom")->setDeactivated();
     }
-
-    updateTooltip();
 }   // init
 
 // ----------------------------------------------------------------------------
@@ -332,6 +330,7 @@ void OptionsScreenVideo::updateGfxSlider()
         gfx->setCustomText( _("Custom") );
     }
 
+    updateTooltip();
 }
 
 // ----------------------------------------------------------------------------