Changes

FFS: always reset current stage if it is too high

The saved current stage can sometimes be too high, so always save it in
the updater if it is higher than the actual current stage.

Probably fixes some tick-to-tick bugs in KSP's staging where the builder
will get triggered and the stage hasn't been decremented yet.

Signed-off-by: Lamont Granquist <lamont@scriptkiddie.org>
 (commit: 1014850)