fix talisman crash

On Gummi Phone, thanks to `mleaf233` for the help!

Author: cloudzXIII

FinalMix.lua

@@ -30,6 +30,7 @@ SMODS.DynaTextEffect {
 
 -- tailsman thingy
 to_big = to_big or function(x) return x end
+to_number = to_number or function(x) return x end
 
 SMODS.current_mod.optional_features = {
   post_trigger = true,

content/cards/17_gummiphone.lua

@@ -31,7 +31,7 @@ SMODS.Joker {
 
     calculate = function(self, card, context)
         if context.after and not context.blueprint and not context.repetition and not context.other_card then
-            local handy = hand_chips
+            local handy = to_number(hand_chips)
             card.ability.extra.old_hand_chips = handy / 10
         end
         if context.setting_blind and card.ability.extra.old_hand_chips > 0 then