Max mana Resets to a way earlier point after reverting from self polymorph

[Former user]

After reverting from a self polymorph, my max mana resets to a point way before I cast the spell. This gives me a heavy loss of max mana.

[V H. U]

Removing version: v0.5_PreRelease (automated comment)

[Houdini111]

Fixed issue #129, max health and max mana resetting with restore potion

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