[Walkure]

Last time I drove the car (like 3 weeks ago) I noticed the front passenger side turn signal was out.
Due to the weather I didn't have a chance to check it until yesterday.
When I popped the hood, this is what I found.
Has anyone experienced this?
Is there anything I can do to prevent it?
Everything snapped firmly back into place but I can't figure out how it popped out on its own.