Non-dumb way to make clue lowercase

clue can be null sometimes, but only if "error" is true

Author: Canonelis

src/Global.-1.ttslua

@@ -632,7 +632,6 @@ function clueEntered(player, value)
 
     -- Parse the entered clue into its respective parts
     local clue, number, error = getClueDetails(value)
-    clue = clue:lower()
 
     -- Handle clue parsing errors
     if error then
@@ -649,6 +648,9 @@ function clueEntered(player, value)
       return
     end
 
+    -- Standardize clue to lowercase
+    clue = clue:lower()
+
     -- Don't allow a clue that isn't covered
     for cardIndex, cardData in ipairs(cards) do
       if not cardData.covered and cardData.value:lower() == clue:lower() then