Fixed a video memory leak in the HUD: active effect rows (medkit, vodka, syringe, cognac) created new textures every second and never freed the old ones, and so did the notices on the right and the price tags. Over a long session this added up to hundreds of megabytes, the frame started to stutter, and only a full s&box restart helped (Thanks to Feofan Karp for noticing this)

In first person the fog at the map edge no longer floods the inside of the truck while it drives: it is off on the way in and out and fades back in after the truck stops

Fixed the sky showing through grated landings in dungeons: the bunker missile silo (the corner where the stairs come up), the bridge ends over the pit in the lab and the sewer settling tank now have concrete under the grate