ref: 19401e95e0a75577103e9c1a877611234a0d8ab5
parent: 0a7c531e8f4c1970662f7c30aea006e65d5ff010
author: Ben Harris <bjh21@bjh21.me.uk>
date: Mon Feb 13 06:08:14 EST 2023
Don't leak duplicate edges in Untangle Untangle game descriptions are allowed to contain duplicate edges, and add234() can handle deduping them. However, when add234() reports that your newly-allocated edge is a duplicate, it's important to free it again.