Fix bug where we did not correctly explode when multiple user_ids were set in macaroon
Fix bug where we did not correctly explode when multiple user_ids were set in macaroon

matrix-org/synapse,TribeMedia/synapse,matrix-org/synapse,matrix-org/synapse,TribeMedia/synapse,matrix-org/synapse,TribeMedia/synapse,matrix-org/synapse,TribeMedia/synapse,TribeMedia/synapse,matrix-org/synapse