fix fuzzymatch

[sjwsl]

This logic error sometimes causes fatal

Error invoking 'python_execute' on channel 8 (python2-script-host):
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/Users/xutianshu/.vim/plugged/LeaderF/autoload/leaderf/python/leaderf/anyExpl.py", line 815, in start
    the_args.start(arguments, *args, **kwargs)
  File "/Users/xutianshu/.vim/plugged/LeaderF/autoload/leaderf/python/leaderf/anyExpl.py", line 747, in _default_action
    manager.startExplorer(win_pos[2:], *args, **kwargs)
  File "/Users/xutianshu/.vim/plugged/LeaderF/autoload/leaderf/python/leaderf/rgExpl.py", line 884, in startExplorer
    super(RgExplManager, self).startExplorer(win_pos, *args, **kwargs)
  File "/Users/xutianshu/.vim/plugged/LeaderF/autoload/leaderf/python/leaderf/manager.py", line 2298, in startExplorer
    self.input()
  File "/Users/xutianshu/.vim/plugged/LeaderF/autoload/leaderf/python/leaderf/manager.py", line 62, in deco
    func(self, *args, **kwargs)
  File "/Users/xutianshu/.vim/plugged/LeaderF/autoload/leaderf/python/leaderf/manager.py", line 2524, in input
    self._search(cur_content)
  File "/Users/xutianshu/.vim/plugged/LeaderF/autoload/leaderf/python/leaderf/manager.py", line 1071, in _search
    self._fuzzySearch(content, is_continue, step)
  File "/Users/xutianshu/.vim/plugged/LeaderF/autoload/leaderf/python/leaderf/manager.py", line 1459, in _fuzzySearch
    pair, highlight_methods = self._filter(step, filter_method, content, is_continue)
  File "/Users/xutianshu/.vim/plugged/LeaderF/autoload/leaderf/python/leaderf/manager.py", line 1116, in _filter
    result, highlight_methods = filter_method(cur_content)
  File "/Users/xutianshu/.vim/plugged/LeaderF/autoload/leaderf/python/leaderf/manager.py", line 1241, in _andModeFilter
    result = filter_method(source=tmp_content)
TypeError: _fuzzyFilterEx() got an unexpected keyword argument 'source'