Use numeric for instead of `ipairs` in zmq.loop
Use numeric for instead of `ipairs` in zmq.loop

LuaDist/lzmq,bsn069/lzmq,moteus/lzmq,zeromq/lzmq,zeromq/lzmq,bsn069/lzmq,LuaDist/lzmq-ffi,LuaDist/lzmq,LuaDist/lzmq-ffi,zeromq/lzmq,moteus/lzmq,moteus/lzmq