metalink: Proper error handling
metalink: Proper error handling

Tojaj/librepo,Tojaj/librepo,rpm-software-management/librepo,bgamari/librepo,rholy/librepo,rholy/librepo,Conan-Kudo/librepo,rholy/librepo,Conan-Kudo/librepo,bgamari/librepo,bgamari/librepo,Tojaj/librepo,rholy/librepo,Conan-Kudo/librepo,rpm-software-management/librepo,rpm-software-management/librepo