If it were my bike, I'd continue to ride it. I'd look at it every now and then to make sure nothing bad is happening. But I do that with my own bike now that isn't damaged. I look at everything whenever I clean it and other times to make sure nothing is loose, cracking or going bad in other ways. Perhaps I might put a little tinted epoxy filler on it to make it look a little better.

If it was a bike I am looking at buying, I might look elsewhere unless everything else is in great shape and the price is too low to pass up.