fix "make install" failure
fix "make install" failure

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