[1.7.4] Fiery Cleansing's on_pre_use doesn't consider die_at

[visage]

Fiery Cleansing (from the demon seed) costs 20% of max_life to use, and has an on_pre_use that checks that the character has enough life left... but this calculation ignores die_at. This means it prevents use even when the character has plenty of life left to spend.