Wrap NSLog's in `#if DEBUG` so they don't clutter up, slow down, and risk exposing potentially sensitive information into the logs.
Wrap NSLog's in `#if DEBUG` so they don't clutter up, slow down, and risk exposing potentially sensitive information into the logs.

hsoi/CocoaMQTT,EmuxEvans/CocoaMQTT,zl00/CocoaMQTT,zl00/CocoaMQTT,hankbao/CocoaMQTT