D12905: KF5I18NMacros: Don't install an empty dir when no po files exist

[Aleix Pol Gonzalez]

apol added a comment.


  LGTM

REPOSITORY
  R249 KI18n

REVISION DETAIL
  https://phabricator.kde.org/D12905

To: heikobecker, ilic
Cc: apol, ltoscano, kde-frameworks-devel, michaelh, ngraham, bruns