Recursive promises - a problem for the garbage collector?

Question

Given this function:

syncUpAsync = function() {	  	
  data.history.getNextUnsyncedEventAsync().then(function(event)) {
    if event {
      processHistoryEventAsync(event).then(syncUpAsync);
    }
  });
}

Will this lead to excessive memory usage because of the captures "event" object?

The call stack seems normal, there seem to be no recursion involved.

Should I use a WinJS.Promise.timeout here instead of .then(syncUpAsync) ?