Fixed disabled ribbon items can be accessed anyway if you use keyboard and not mouse

git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/main/trunk@8465 178a84e3-b1eb-0310-8ba1-8eac791a3b58

src/guiengine/widgets/ribbon_widget.cpp

@@ -586,6 +586,11 @@ EventPropagation RibbonWidget::transmitEvent(Widget* w, std::string& originator,
     // bring focus back to enclosing ribbon widget
     this->setFocusForPlayer( playerID );
     
+    if (m_selection[playerID] != -1)
+    {
+        if (m_children[m_selection[playerID]].m_deactivated) return EVENT_BLOCK;
+    }
+    
     return EVENT_LET;
 }
 // -----------------------------------------------------------------------------