Decode does not zero the destination variable before decoding the value into it.

	var rec r.ChangeResponse
	var updatedDec UserDecision

      	go func() {
		for cur.Next(&rec) {
			newValInterface := rec.NewValue
			fmt.Printf("\nNewvalue: %+v\n", newValInterface)
			fmt.Printf("\nupdatedDec: %+v\n", updatedDec) 
			mapstructure.Decode(newValInterface, &updatedDec) 
			fmt.Printf("\nDecision update: %+v\n", updatedDec)
			decUpdateCh <- updatedDec
		}
		log.Println("Exiting goroutine listening on decUpdate changes.")
	}()