Hey, I just bought a used bass from Musician's Friend and whilst trying to adjust the action, I noticed that the little bridge piece that goes into the body wasn't in all the way. I thought nothing of it since I don't generally mess with bridges, but when I actually tried to adjust the height, it slipped out more. Just on one side though. Here's a picture so you know what I'm talking about. I apologise if this is the wrong thread, but it seemed the closest to what I needed. I also apologise for the bad photo.

Anyway, I'm gonna take it to a local store tomorrow to have them take a look at it, but I was wondering if there's any kind of quick fix for it or at least a way to play it without worrying about it breaking.

Thanks in advance for any help.
I did a similar fix by myself in a guitar years ago and lost stability and sustain. It is important to have your bridge perfectly mounted so I recommend to visit a professional luthier.