U442 - scroll of charging

U442 - scroll of charging
<Someone> suggested a scroll to counteract an unknown scroll of charging
that had negative effects.  Scroll of punishment already costs the same,
so that unknown behavior is already covered.  Plus, a cursed scroll of
charging already has negative effects, except in the case where the player
was confused where no negative effect from reading a cursed scroll of
charging occured.  Added such an effect (since the curse should still cause
something bad, even though the reader is confused), to drain the player's
energy.