Re-adds sprite for corn oil tank.
Created by: Probe1
YOU FUKT UP @PJB3005 https://github.com/d3athrow/vgstation13/commits/Bleeding-Edge/icons/obj/objects.dmi https://github.com/d3athrow/vgstation13/commit/9d7ff729b6b89eee0b3d750327f9fbaff4aeb045 You moved the corn oil tank to the stools-chairs-beds.dmi along with other stuff.
To think, we've had invisible corn oil tanks for years.. and no one noticed.