SCI: LB2: Act 4 not initialized correctly (floppy 1.0)

[sluicebox]

LB2 Floppy 1.0 doesn't initialize act 4 correctly when triggered by finding the dagger, causing the act 4 scene in Yvette's to lockup the game.

I've written a script patch for this and will be submitting soon.

Attached are two saves right before the end of act 3 to test and compare both ways to end the act.

To reproduce:

1. Load the save that's in the vat room
2. Climb vat 13, this will trigger act 4
3. Go upstairs to Yvette's office via the staircase
4. You end up back in the hallway without Olympia and Steve and input is forever disabled

You can use the debugger to see what's going on. "vv g 111" will display global111 which is 8 in both save games. I ended up with this value by missing some optional act 3 conversations. Triggering act 4 by reporting Ernie will result in it being set to 11, which is the correct act 4 value, but doing so by getting the dagger will leave it at 8, leading to the lockup. The script patches causes the global to be set to 11 in both cases.

This only affects version 1.0 floppy english. 1.1 floppy versions, including all localized versions, were fixed by Sierra.

[sluicebox]

​https://github.com/scummvm/scummvm/pull/1344

[bluegr]

The pull request has been merged, so this can be closed. Great work! :)