D5623: fix build against Android NDK (API Level 21 is required)

[Matthieu Gallien]

mgallien added a reviewer: Android.

REPOSITORY
  R286 KFileMetaData

REVISION DETAIL
  https://phabricator.kde.org/D5623

To: mgallien, #android
Cc: #frameworks
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.kde.org/pipermail/kde-frameworks-devel/attachments/20170427/c00fd6e9/attachment.html>