Bugfix #732 part 2

apps/openmw/mwinput/inputmanagerimp.cpp

@@ -917,8 +917,8 @@ namespace MWInput
     void InputManager::keyBindingDetected(ICS::InputControlSystem* ICS, ICS::Control* control
         , OIS::KeyCode key, ICS::Control::ControlChangingDirection direction)
     {
-        //Disallow binding escape key
-        if(key==OIS::KC_ESCAPE)
+        //Disallow binding escape key, and unassigned keys
+        if(key==OIS::KC_ESCAPE || key==OIS::KC_UNASSIGNED)
             return
 
         clearAllBindings(control);