v.1.2.2 Underground pipe bug fixes — Clockwork Cleanup Steam update #6354648

Fixed a crash which occurred when placing a pair of underground pipes in the scavenge tool’s grid (thanks Jocker13 for finding this.) Fixed another crash which occurred when dragging a cluster of pipes from the scavenge grid to the main grid with only a single underground pipe. (Note that now scavenge will place both halves of an underground pipe when it is offered as a reward. This doesn’t increase the number of underground pipes you receive, as all underground pipes are a pair of pipes already.) Fixed several bugs which let the player create an infinite amount of underground pipes. Fixed MACs animation when loading a save file into the workshop.