[ticket/13111] Dropdown options are already an array in the field data

PHPBB3-13111
Merge pull request #3008 from nickvergessen/ticket/13111

[ticket/13111] Dropdown options are already an array in the field data

* nickvergessen/ticket/13111:
  [ticket/13111] Dropdown options are already an array in the field data
Merge branch 'develop-ascraeus' into develop

* develop-ascraeus:
  [ticket/13111] Dropdown options are already an array in the field data