Iterating over actors
|Reported by:||eriktorbjorn||Owned by:||SF/ender|
Ok, this is *completely* untested but it makes sense to me. When rewriting gfxUsageBits it looks like I accidentally made a few references to actor 0.
I don't know what visible problems this caused, if any, but this should fix it, and also gets rid of getFirstActor() in the process.
Ticket imported from: #668634. Ticket imported from: patches/263.