Fixed glitch that appeared in the new input configuration screen (I actually fail to see why it worked before)

git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/main/trunk@5363 178a84e3-b1eb-0310-8ba1-8eac791a3b58

src/input/input_manager.cpp

@@ -212,7 +212,7 @@ void InputManager::inputSensing(Input::InputType type, int deviceID, int btnID,
         m_sensed_input->btnID = btnID;
         m_sensed_input->axisDirection = axisDirection;
 
-        if (type == Input::IT_KEYBOARD)
+        if (type == Input::IT_KEYBOARD && value > Input::MAX_VALUE/2)
         {
             OptionsScreenInput2::getInstance()->gotSensedInput(m_sensed_input);
             return;