Re: Avoid lost result of recursion (src/backend/optimizer/util/inherit.c)

Also, I think it might be better to take the opportunity to rewrite
the function to not use recursion. I don't quite see the need for it
here and it looks like that might have helped contribute to the
reported issue.  Can't we just write this as a while loop instead of
having the function call itself? It's not as if we need stack space
for keeping track of multiple parents. A child relation can only have
1 parent. It seems to me that we can just walk there by looping.