You can save anything if you're willing to paint it a solid colour, it ain't scrap. Having said that its a bit worrying. I'm presuming its the typical situation of a body cap on top of a body of different wood, and the crack is only in the cap. If so my first guess would be that one or the other wasn't flat when they were clamped and glued together. In that case a relevant question is whether the crack down towards the bridge will propagate further with time. I'm not sure there's any way of answering that. You could try drilling a hole in line with the crack under the tailpiece in the hope that if it makes it that far the hole will stop it going any further (you'd fill the hole!)