Fix a small memory leak in hif_goal_get_packages()
Fix a small memory leak in hif_goal_get_packages()

We were refcounting the HyPackages correctly, but leaking the HyPackageList.

hughsie/libhif,rpm-software-management/libdnf,cgwalters/libhif,cgwalters/libhif,rpm-software-management/libdnf,edynox/libdnf,kalev/libhif,Conan-Kudo/libhif,edynox/libdnf,Conan-Kudo/libhif,hughsie/libhif,Conan-Kudo/libhif,juhp/libhif,rpm-software-management/libdnf,kalev/libhif,Conan-Kudo/libhif,rpm-software-management/libhif,rpm-software-management/libhif,rpm-software-management/libhif,hughsie/libhif,cgwalters/libhif,juhp/libhif,rpm-software-management/libhif,cgwalters/libhif,edynox/libdnf,rpm-software-management/libdnf,edynox/libdnf,hughsie/libhif