Make KF5 version build with latest Qt5 AppStream
Hi! This patch fixes the build with newer Qt5 versions of AppStream when trying to build the KF5 version of frameworkintegration. However, for some reason the build fails on FreeBSD, which really looks like an environment issue to me, rather than a problem with this patch...
Once the CI issue is fixed, this should be safe to merge. Cheers, Matthias