Don't double-unmarshal on command runs out of debug.
Don't double-unmarshal on command runs out of debug.

Reported by John Morales.

hexadecy/mgo,deafgoat/mgo,Yottaa/mgo.v2,DroiTaipei/mgo,hexadecy/mgo,deafgoat/mgo,DroiTaipei/mgo,DroiTaipei/mgo,DroiTaipei/mgo,Yottaa/mgo.v2,deafgoat/mgo,hexadecy/mgo,Yottaa/mgo.v2,hexadecy/mgo,Yottaa/mgo.v2,deafgoat/mgo