SCI: ECO1: Column puzzle can't be completed

[sluicebox]

The column puzzle in room 160 can be put in a state that can't be completed. This is a bug in the original that affects all versions.

The nine column pieces have to be locked into their correct positions in the correct order. If you put them all in the right position, but not all in the right order, and then leave the room, then when you return all the pieces will be locked and the game can't be completed.

To reproduce with attached save game:

1. Click Do on the column piece on the top right (left wall)
2. Note that all 9 column pieces on the left wall match the right wall
3. Leave the room and return
4. All column pieces are now locked and the puzzle can't be completed

The patch prevents the final column from being locked when the puzzle isn't solved so that the player always has at least one to move.

This bug was discovered a year ago by a dedicated ScummVM user who wrote up the description beautifully but posted it to gamefaqs instead of here!
​https://gamefaqs.gamespot.com/boards/564626-ecoquest-the-search-for-cetus/76129636

[sluicebox]

​https://github.com/scummvm/scummvm/pull/1501

[Filippos Karapetis <bluegr@…>]

In a6bcf88c:

SCI: Fix ECO1 column puzzle, bug #10885

Works around a script bug that prevents the game from being completed