rust-zmq does not build with nightly

[flo-dhalluin]

src/zmq/lib.rs:30:13: 30:33 error: expected constant expr for vector length: non-constant path in constant expr
src/zmq/lib.rs:30 type Msg_ = [c_char, ..MsgSize_];
^~~~~~~~~~~~~~~~~~~~

Submitted pull request #46

[jedisct1]

rust-zmq was updated, so this issue can probably be closed now. Thanks!