84b2ac45de
The two duplicated functions, save_image and finish_image will move an existing image out of the way if it exists, but it isn't configurable. Check an environment variable is 0 before doing so. Switch save_image to just calling finish_image, rather than duplicating its code exactly. Change-Id: I26a5a8fa4b6e853c9440bffab195b0bc3728be40