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- fixed vertexscan crashing on bad walls.

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This commit is contained in:
Christoph Oelckers 2021-12-29 23:41:24 +01:00
parent f9cea2b1db
commit 4d8028831b
1 changed files with 2 additions and 1 deletions
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3
source/core/gamefuncs.h
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@ -138,7 +138,8 @@ void vertexscan(walltype* startwall, func mark)
while (true) while (true)
{ {
auto thelastwall = wal->lastWall(); auto thelastwall = wal->lastWall();
if (!thelastwall->twoSided()) break; // thelastwall can be null here if the map is bogus.
if (!thelastwall || !thelastwall->twoSided()) break;
wal = thelastwall->nextWall(); wal = thelastwall->nextWall();
if (walbitmap.Check(wall.IndexOf(wal))) break; if (walbitmap.Check(wall.IndexOf(wal))) break;