lasttilde no longer shall fail sometimes

&lta failed sometimes.

plugins/lasttilde.py

@@ -20,9 +20,10 @@ def last_tilde(msg):
     try: data = util.tilde.old_challenges[nick][0]
     except KeyError: return err("User hasn't played &tilde from the last boot.")
     if callable(data):
-         data = inspect.getclosurevars(data).nonlocals
-         if len(data) == 0:
+         datax = inspect.getclosurevars(data).nonlocals
+         if len(datax) == 0:
              data = inspect.getsource(data)
+         else: data = datax
     if answer is None:
         data = str(data)
         answer = f"{pnick}'s last tilde's answer was supposed to be `{data}`."