bindings bug fix

If binding was blocked in one world, it stayed being blocked in other.

src/logic/scripting/lua/libs/libcore.cpp

@@ -60,6 +60,8 @@ static int l_close_world(lua::State* L) {
     if (save_world) {
         controller->saveWorld();
     }
+    // unblock all bindings
+    Events::enableBindings();
     // destroy LevelScreen and run quit callbacks
     engine->setScreen(nullptr);
     // create and go to menu screen