SCUMM: Amiga Monkey2 color problem when using the stick with the dog at the mansion

[dwatteau]

As discovered by RetroSpeedruns on YouTube here:
​https://www.youtube.com/watch?v=lennSAcOqag

In the Amiga version of Monkey Island 2, if you pick up the stick under the mattress inside the jail, and then use it on the dog at the front of the Governor Mansion's on Booty Island, Guybrush's reaction will have some very strange colors, as if the sprite was drawn with an invalid palette for that scene.

This is probably an original game bug, since the video above was made with WinUAE. I can reproduce it with ScummVM, but only with my Amiga version (from the Limited Run Games set), so it probably has something to do with Amiga palette handling.

I think that this animation can be triggered in two places:

• when giving the stick to the Mansion dog (script 209, room 53).
• when using the stick with the dead prisoner in the jail (script 201, room 29): there, the colors are fine.

[dwatteau]

Amiga English version: use the stick with the dog

[dwatteau]

Costume 55 is the one with an invalid palette for the Governor's Mansion.

Here's my PR proposal for this:
​https://github.com/scummvm/scummvm/pull/3841

[bluegr]

Nice work! The PR has been merged, so this can be closed now