make sure we shutdown the worker when they were already in closing state
make sure we shutdown the worker when they were already in closing state

PrFalken/exaproxy,david-farrar/exaproxy,david-farrar/exaproxy,PrFalken/exaproxy,jbfavre/exaproxy,PrFalken/exaproxy,david-farrar/exaproxy,jbfavre/exaproxy