Fixes this exception:
Unhandled exception: [(<class 'UnboundLocalError'>,
UnboundLocalError("local variable 'err' referenced before assignm>
Traceback (most recent call last):
File "src/gevent/greenlet.py", line 766, in gevent._greenlet.Greenlet.run
File "/opt/zeronet/src/util/RateLimit.py", line 57, in <lambda>
thread = gevent.spawn_later(time_left, lambda: callQueue(event)) # Call this function later
File "/opt/zeronet/src/util/RateLimit.py", line 42, in callQueue
return func(*args, **kwargs)
File "/opt/zeronet/src/File/FileRequest.py", line 185, in actionUpdate
self.response({"error": "File invalid: %s" % err})
UnboundLocalError: local variable 'err' referenced before assignment
941571f71f