Change code to adapt to iterator's refactor

sources/VotingHandlerAdapter.uc

@@ -169,7 +169,7 @@ private function string BuildOptionsString(GameMode gameMode)
     local bool                  optionWasAdded;
     local string                result;
     local string                nextKey, nextValue;
-    local Iter              iter;
+    local CollectionIterator    iter;
     local AssociativeArray      options;
     options = gameMode.GetOptions();
     for (iter = options.Iterate(); !iter.HasFinished(); iter.Next())