Re utilizing redis connections causes an error when trying to close multiple queues.

Created by: lebobbi

let opts = {
    createClient: function(type){
            switch(type){
           case 'client':
              return rClient;
           case 'subscriber':
              return rSubscriber;
           default:
             return new Redis();
          }
    }
}
let qA = new Queue('A', opts);
let qB = new Queue('B', opts);

qA.close();
qB.close();

this will result in error

Unhandled rejection Error: Connection is closed. at close (/project/node_modules/ioredis/lib/redis/event_handler.js:101:21) at Socket. (/mnt/c/Users/carlo/Projects/parse-general/node_modules/ioredis/lib/redis/event_handler.js:76:14) at Socket.g (events.js:292:16) at emitOne (events.js:96:13) at Socket.emit (events.js:188:7) at TCP._handle.close [as _onclose] (net.js:497:12)

Should I content with just closing one queue? What will happen with that third Redis connection?

Thanks for your hard work!