Wrong handling of VarSet event

[vovochka404]

{ lines: 
   [ 'Event: VarSet',
     'Privilege: dialplan,all',
     'Channel: SIP/sip123456-000000be',
     'Variable: MACRO_DEPTH',
     'Value: 1',
     'Uniqueid: 1399421255.190' ],
  EOL: '\r\n',
  variables: { MACRO_DEPTH: undefined },
  event: 'VarSet',
  privilege: 'dialplan,all',
  channel: 'SIP/sip123456-000000be',
  value: '1',
  uniqueid: '1399421255.190' }

Hack in Message.prototype.unmarshall() that supposed to handle variables in event currently breaks resulted event obj for VarSet event.

There is no variable key in obj.
There is no values in variables storage.