I'm surprised you only just noticed it. Its a drying crack, not something from stress or weakness. It was probably always in the stave, or developed as you were making it, because it wasn't dry enough. Its the flexing in the finish that shows it up. It poses no threat to the bow.
Yes you could flood it with superglue, but there's no need to wrap it as it isn't close to the edge, let alone running off the side.