Update Controls.SelectBox.loadData.phpt

Test update for commit #6d2401c
[https://github.com/Sebosek/forms/commit/6d2401cac4f61976f2aa9e14cfe365935ad0a3b1]

(Honestly, #6d2401c is my first commit to open project at all, so I'm not sure, if I'm doing things well.)