remove zmq_msg_init_data from `socket.send()`
remove zmq_msg_init_data from `socket.send()`

and use zmq_msg_init_size with a posteriour
strncpy from c_message char* pointer. This fixed
a unkown problem and always works.

Some issue related with the way how zmq_msg_init_data is handled
:x

felipecruz/zmqpy,felipecruz/zmqpy