Fix #505: Locking in terminate conforms to 4.2.x, with better handling
Fix #505: Locking in terminate conforms to 4.2.x, with better handling
zeromq/jeromq,fredoboulo/jeromq,trevorbernard/jeromq,trevorbernard/jeromq,zeromq/jeromq,fredoboulo/jeromq