Crash in Qt wrappers

[aleixpol]

#0 as_provided_get_items() at /home/apol/devel/frameworks/appstream/src/as-provided.c:264
#1 AppStream::Provided::items() at /home/apol/devel/frameworks/appstream/qt/provided.cpp:108
#2 AppPackageKitResource::executables() at /home/apol/devel/frameworks/discover/libdiscover/backends/PackageKitBackend/AppPackageKitResource.cpp:119
#3 AppPackageKitResource::canExecute() at /home/apol/devel/frameworks/discover/libdiscover/backends/PackageKitBackend/AppPackageKitResource.cpp:181
#4 AbstractResource::qt_static_metacall() at /home/apol/build-devel/frameworks/discover/libdiscover/moc_AbstractResource.cpp:278
#5 QQmlPropertyData::readPropertyWithArgs() at /home/apol/devel/frameworks/qt5/qtdeclarative/src/qml/qml/qqmlpropertycache_p.h:308
#6 QQmlPropertyData::readProperty() at /home/apol/devel/frameworks/qt5/qtdeclarative/src/qml/qml/qqmlpropertycache_p.h:302
#7 loadProperty() at /home/apol/devel/frameworks/qt5/qtdeclarative/src/qml/jsruntime/qv4qobjectwrapper.cpp:139
#8 QV4::QObjectWrapper::getProperty() at /home/apol/devel/frameworks/qt5/qtdeclarative/src/qml/jsruntime/qv4qobjectwrapper.cpp:317

I've gotten the first crash, in #0 priv is nullptr.

[ximion]

This is with very high certainty issue #89 which was fixed about an hour ago already.