Push nil instead of 'unknown' for unknown buttons;
@@ -36,7 +36,6 @@ int l_lovrHeadsetInit(lua_State* L) {
map_set(&ControllerAxes, "touchy", CONTROLLER_AXIS_TOUCHPAD_Y);
map_init(&ControllerButtons);
- map_set(&ControllerButtons, "unknown", CONTROLLER_BUTTON_UNKNOWN);
map_set(&ControllerButtons, "system", CONTROLLER_BUTTON_SYSTEM);
map_set(&ControllerButtons, "menu", CONTROLLER_BUTTON_MENU);
map_set(&ControllerButtons, "trigger", CONTROLLER_BUTTON_TRIGGER);
