tree 8fa18b6f816e999aba1f0057c67c68dacdaac70e
parent dcd3afcabfeb447a075b189f20cd523e177a0a9d
author Behdad Esfahbod <behdad@behdad.org> 1691008855 -0600
committer Behdad Esfahbod <behdad@behdad.org> 1691008855 -0600

[graph] Make space_for non-recursive

It was tail-recursive so perhaps the compiler did the same.
Anyway, make it explicit now.