Fix a problem with appstream-compose with older AppData files
Fix a problem with appstream-compose with older AppData files

Do not remove the desktop-provided 'Name' and 'Comment' if there is no
AppData-provided version.

hughsie/appstream-glib,ximion/appstream-glib,ximion/appstream-glib,hughsie/appstream-glib,hughsie/appstream-glib,ximion/appstream-glib