Fixed zmq [demos]
Fixed zmq [demos]


Former-commit-id: ba95ec542eda35710b4d2081d980ca74f2a9838c [formerly 08fafb1fc8592b4e3c5f59417ea7c2ad09763241]
Former-commit-id: c6d2c1accf55a8f9da69f224d83de045b7920e06
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine