fix: coldkey arb swap hotkey

Author: Samuel Dare

pallets/subtensor/src/swap.rs

@@ -33,7 +33,7 @@ impl<T: Config> Pallet<T> {
         let coldkey = ensure_signed(origin)?;
 
         ensure!(
-            !Self::coldkey_in_arbitration(&old_hotkey),
+            !Self::coldkey_in_arbitration(&coldkey),
             Error::<T>::ColdkeyIsInArbitration
         );