pass Buffers by reference

lib/dao-factory.js

@@ -1463,7 +1463,7 @@ module.exports = (function() {
         return elem
       }
       // Unfortunately, lodash.cloneDeep doesn't preserve Buffer.isBuffer, which we have to rely on for binary data
-      if (Buffer.isBuffer(elem)) { return new Buffer(elem); }
+      if (Buffer.isBuffer(elem)) { return elem; }
 
       // Otherwise return undefined, meaning, 'handle this lodash'
       return undefined