zmq_unbind does not work on endpoints using "inproc" transport
Description
Unbinding from a previously bound endpoint should return 0 upon success. Calling zmq_unbind(socket, "inproc://anything") always returns -1 and sets zmq_errno to 2 which is ENOENT.
This exact same process works fine for tcp and ipc transports.
Unbinding from a previously bound endpoint should return 0 upon success. Calling zmq_unbind(socket, "inproc://anything") always returns -1 and sets zmq_errno to 2 which is ENOENT.
This exact same process works fine for tcp and ipc transports.