queues: fix some action when we didn't declare the queue locally
queues: fix some action when we didn't declare the queue locally

Fixes part of #230

basic_consume was actually failing because we were
not correctly registering it, the queue being None

Kudos to #230 for pointing this out somehow

Signed-off-by: Marc-Antoine Perennou <07f76cf0511c79b361712839686f3cee8c75791c@Perennou.com>

Geal/lapin,sozu-proxy/lapin,Geal/lapin