API: exam/result/id endpoint does not return "status"

[Timothy Roden]

The aforementioned endpoint doesn't return a status variable upon success, therefore breaks code that checks the status of a request:

exam/result/25012:

{"id":"25012","cid":"1206494","name":"VATUSA - Basic ATC Quiz","score":"100","passed":"1","date":"2013-12-30 10:58:32"}