Get method value is wrong, when the value type is Map about node-cache

[mpneuried]

var myCache( { useClones: false } );

See options.

• useClones: (default: true) en/disable cloning of variables. If true you'll get a copy of the cached variable. If false you'll save and get just the reference.
  Note: true is recommended, because it'll behave like a server-based caching. You should set false if you want to save complex variable types like functions, promises, regexp, ...

[luozhanhong]

Thank you.