#257 Cannot climb ladder in KQ4

[Frédéric Brière]

Playing King's Quest 4 (PC 5.25") 2.3 9/27/88 [AGI 3.002.086] with
sarien 20040229 (from Debian/sid). Every time I try to climb the ladder
in the haunted house, the game freezes.

To reproduce, load the attached savegame and CLIMB LADDER.

[Frédéric Brière]

KQ4 savegame at base of ladder