Don't register a keypress when a gamepad button is released in the menus

git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/main/trunk@10368 178a84e3-b1eb-0310-8ba1-8eac791a3b58

src/input/input_device.cpp

@@ -246,7 +246,7 @@ bool GamePadDevice::processAndMapInput(Input::InputType type, const int id,
         {
             success = m_configuration->getGameAction(type, id, value, action);
         }
-        else
+        else if (value > Input::MAX_VALUE/2)
         {
             // bindings can only be accessed in game and menu modes
             assert(mode == InputManager::MENU);