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Don't leak duplicate edges in Untangle

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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.
This commit is contained in:
Ben Harris
2023-02-13 11:08:14 +00:00
parent 0a7c531e8f
commit 19401e95e0
1 changed files with 3 additions and 1 deletions
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4
untangle.c
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@ -420,7 +420,9 @@ static void addedge(tree234 *edges, int a, int b)
e->a = min(a, b); e->a = min(a, b);
e->b = max(a, b); e->b = max(a, b);
add234(edges, e); if (add234(edges, e) != e)
/* Duplicate edge. */
sfree(e);
} }
static bool isedge(tree234 *edges, int a, int b) static bool isedge(tree234 *edges, int a, int b)