Cancelling game generation creates a high score entry in some games

[slavalamp]

Games affected: Canfield, Freecell, Simple Simon

Steps to reproduce:

1. Enable the Guarantee number of movements option
2. Set the amount of moves for the game to a high number (e.g. 1000) so that game generation takes some time and you can cancel it
3. "Start new game"
4. "Cancel and start immediately"
5. There is now a new high score entry, which counts towards Total time played and Total score earned but not the number of games and doesn't show up in recent score

Example FreeCell results: