Fix crash in {set,get}sockoption with zmq 3.2.1
Fix crash in {set,get}sockoption with zmq 3.2.1

	$ lua examples/server_poll.lua
	Invalid socket option type, this shouldn't happen.
	Aborted (core dumped)

Signed-off-by: Petr Štetiar <f0d4d86d9c7002e67e6ae7bb5596bc0afa7b4c3a@true.cz>
Signed-off-by: Robert G. Jakabosky <4501c3b0336cf2d19ed69a8d0ec436ee3f88b31b@sharedrealm.com>

Neopallium/lua-zmq,azukiapp/lua-zmq