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

[Matthieu Gallien]

mgallien created this revision.
Restricted Application added a project: Frameworks.
Restricted Application added a subscriber: Frameworks.

REVISION SUMMARY
  fix build against Android NDK (API Level 21 is required)

TEST PLAN
  Test compilation under linux and Android

REPOSITORY
  R286 KFileMetaData

BRANCH
  master

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

AFFECTED FILES
  src/xattr_p.h

To: mgallien
Cc: #frameworks
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