Well as long as the chip does not spider out in any direction you could be ok. If it does you could be looking at a catastophic failure in the futre with even the slightest bump. If you can, I would sand the edges smooth with some metal sand paper, the kind you use with water or I would find a piece of either wood or plastic in an L shape, silicone the daylights out of it and put it on there to try and prevent any chance of it spidering out and causing a 20 gallon mess. If you can put the crack towards the back and get a piece that goes top to bottom it might not look that bad, especially if you did both sides of the back.
I error on the cautious side, it may not need it but once glass gets going it can go completely without notice.